Description and Backstory

Physical description time woo yay fun

First off, he's a robot, he was built in a factory. Though, due to the... ahem s t a t e . . . that robofizz is in, he wasn't built at Big Ozzie's. They (mostly angel) wanted him to be higher-quality, something that would last long, and of course, because Fizz was built at Big Ozzie's, they couldn't really use his image much in the design of Fritz because- y'know- Loo Loo Land copyright. Hence why he doesn't look like him very much. Rather, they decided to give him more of Angel's image, which is easy enough to do cuz all you gotta do is make him white and add some pink stuffs and other eyes.
What's neat about Fritz is he was built to be as anatomically correct as possible, so unlike Fizz, he has an entire body completely built from scratch, with artificial organs and a skeleton and fluids and such. Obviously, since he's not actually organic, his body can't resupply itself with fluids. For example, if he were to bleed, he doesn't have actual blood, so he can't just make more if he is to lose some. The way he's built, however, does allow him to grow, being programmed to do so until a certain age, as close to a realistic age of maturity as possible, so he doesn't keep exponentially growing. He has everything a regular person would have. And yes, I mean  e v e r y t h i n g .
I liked the sound of Fritz needing to be taken to the factory for "check-ups" to ensure he was operating properly, similar to how a real child is taken to the doctor to make sure their body is working right. His "blood" would be refilled if any injuries had occurred, depending on the severity. The factory is basically his repair shop or doctor. Although it is in his programming to grow, that doesn't mean he can heal. If he were to trip and cut his knee, his artificial skin can't heal the way an organic would, nor can his "blood" clot and scab to heal an injury. The pain would go away eventually, as the artificial nerve endings in his body became used to the feeling, however, the laceration would still be there and blood would continue to seep from it unless covered up by a bandage or patch of some kind to keep it inside, and he would have to wait until his next check-up or factory appointment to be able to have it repaired. However, that's merely a worst-case scenario, as his body is more durable than an organic one as well. He still goes to the factory for repairs, but only if he's been damaged, which isn't often anymore.
Lucky that he was built that way, he was a pretty clumsy child. He was a very timid and nervous, yet happy child, for the most part. He grew up with a stutter, though he eventually grew out of it. Again, for the most part. Since he has a full body, his clothes are not attached to him in any way, meaning that he can change them however he likes, unlike Fizz, whose ruffs/danglies are built as a part of him. The hat is not attached either, he can take it off if he wants, though he prefers to keep it on.

okay! now that we've got physical characteristics out of the way
personality and story time!

Past
As mentioned before, as a child he was pretty happy, although shy and timid. He loved going to Loo Loo Land, and would often go with Fizz to work and watch him perform. Occasionally after his shows, Fizz (and occasionally Angel would join them) would take him around the park to have fun with the rides and games and such. Fritz spent the time at home with Angel on days he didn't work and would go with Fizz to Loo Loo Land (or stay at home with him, depending on the day) on the days that Angel had to work. So that was the routine.
Fritz always looked up to Fizz, wanting to perform on stage like he does. So Fizz had the wonderful idea to give him his own little time slot and he could go on stage and tell a few jokes, and Fritz, being the nervous bean he was, completely panicked under pressure and could barely get a word out. Naturally, the audience was bored to death. That is, until someone from the audience decided to make fun of him, in which the crowd broke out into laughter. He didn't really know what was going on, so he just kinda chuckled along and smiled, trying to tell his jokes, the audience laughing at him. And Fizz was a very angy Fizz, cutting Fritz's time short to get everyone to stop laughing at him. When they went home that day, Fritz was blissfully ignorant to the fact that he was being made fun of, and Fizz had to tell Angel what happened, and just how displeased he was. Angel decided to try to cheer him up by telling him that if Fritz is having fun, who cares what people are laughing for, just that they're laughing. And Fizz was like yeah okay
So his next show. Little did Fizz know, Fritz's little disaster fire of a show ended up bringing even more of a crowd, especially among young adults and teenagers, who wanted to see a loser kid embarrass himself. He planned on cancelling the show, having Fritz perform alongside him instead, but there was a crowd of people eager to see and pay for the show. And being the greedy bastard he is, Fizz decided to take the cash and continue the show.
Fritz was having a good time. ...for the first few days. But eventually, he was too well-rehearsed. The jokes came out right and no one laughed at boring lame jokes. He wasn't messing up or doing anything funny. Less people had started coming to the show, which means less people were paying. And Fizz, desperately watching from the curtain, just had to hope something went wrong. And something just so happened to. Fritz knew the lines, but his stutter caused him to trip over his words, and coincidentally, he ended up tripping over his own feet as well, slipping and falling onstage. Which was funny, some loser kid trips and falls haha f u n n y
so this.. happened to spark something in Fizz, and he had a realization. Taking a portion of Angel's words to heart: Who cares what people are laughing for, just that they're laughing.
So he let him have his little show, but he had already begun planning big things for the lil child. He decided to rebrand the show, give him a stage name.
"Fritzel Fizzarolli: Hell's Clumsiest Clown!"
and proceeded to embarrass him on stage for audience enjoyment. Y'know, the classic clown gags, harmless pranks... without Fritz's knowledge. He took him onstage and as Fritz was expecting an average show, oOpSiE yOu'Re A LaUgHinG stOck LoL
and he assumed Fizz was just playing around and having some good old-fashioned messy fun with his kiddo, nothing wrong with that. That's what it was, after all. ...for a while. But that didn't last too long.
And after a while he had been overtaken by greed, he needed bigger stunts, more laughs. So he had him doing tricks that were designed to ultimately fail, and he was to look like a fool. Which would've been harmless if he would have known all he needed to do was play an act. But no no no acts aren't funny!! Real humiliation, that's funny. That brings in the customers and the money and the promotional materal and the money. And continue his show did, Fritz growing more and more tired and afraid of the show and by extension, his father, who submit him to the show day by day. But of course Fizz was too oblivious to notice anything was wrong, and Fritz was too timid to say anything. Fritz begun putting up a bit more resistance to going to perform, reluctantly going or complaining about having to go or saying he would rather be with Angel instead. But y'know, Fizz is- Fizz.
soooooo
"Cmon kid you'll be fine you love this show you've gotta make some big bucks let's bring in the money today woooo"
Until one day, there was a very important show. His biggest show yet, for important people.
And Fritz did not want to go.
He put up such a fight at home, hiding and whining and holding onto anything in sight as he was dragged out of the house. And he continued having a bit of a fit as he was tugged along into the park. Fizz was becoming very annoyed with his son, very quickly. They were already late thanks to the outburst he had at home, and he was making even more of a scene now, and it was making him look bad, and he couldn't have that. Fritz refused to go onstage, even when it was his time, Fizz had to go backstage to see what the issue was. He continued putting up a fight, and of course Fizz had to have this show. Of all days, his most important show?? So he attempted to drag him out of his dressing room and onstage, and of course Fritz didn't like that.
Eventually, Fizz just grabbed onto him and told him something along the lines of "You are going on that stage, stop throwing a tantrum. You're embarrassing yourself." oh the irony
and shoved him onstage, keeping himself out of view. And of course, being forcefully pushed onstage, he fell over. Which of course earned a few claps and giggles from the audience. and Fritz... panicked. He just couldn't do anything, he froze. He couldn't remember any of his tricks or jokes. He just looked at the audience and did nothing.
Which was boring.
But his afraid glance to Fizz backstage and his quiet "I forgot..." happened to be funny. He forgot his tricks omg bruhhhhhhhhhhhhhhhhhh lollllll
So at this point, Fizz was desperate for a show. He had to do something. So naturally what's funnier for a clown show than the classic pie and water
aha
haha
drench the child.
and drench the child he did. And of course, the usual tricks and clown gags. Though Fizz's focus was more on entertaining the audience and raking in their money than ensuring his son was having fun and wasn't getting hurt, so he got much more carried away than usual. Even he had begun laughing at all the theatrics. Everyone was having fun. Well.. everyone except for Fritz.
Humiliated, mocked, made fun of, covered in pie and other things that had been thrown at him, and all wet and tired and too weak to stand or do anything. Because what Fizz failed to notice was that Fritz had begun to cry. Which he hardly did during his shows, to avoid humiliating himself further. But Fizz continued to get more and more carried away. So naturally, gotta set up some dramatic stunt.
And Fritz at this point is terrified. He completely panicked. He screamed and cried and kicked desperately, and it wasn't until Fizz saw the look in his eyes. The desperate, sorry state he had put him in. He just pitied him, making up some lame excuse like oOP LOOK AT THAT FOLKS, WE'RE OUTTA TIME!
He ran offstage crying, and Fizz had to end the show there. rEMEMBER, NO REFUNDS
andddddddddddddd time to go find where the hell the kid went. and- uh yeah he ran. Hid somewhere in the park and Fizz couldn't find him.
When Angel got to the park to pick the two clowns up, they had to go on quite the search to find their little kiddo. And uhh yeah that's basically it for his traumatic childhood.
tl;dr Robofizz is a jerk and publicly humiliates his son for profit, leaving him with some tasty angsty backstory.

Current
So needless to say, all that left him pretty scarred. As he got older, he eventually grew out of his fear of Fizz, and just grew more disdainful, eventually turning into apathetic towards him (Think JoJo McDodd and his father, the mayor, from Horton Hears a Who. That's pretty much them to a tee).
He hates it when Fizz tries to be all buddy-buddy with him, often leaving the house for some downtime to himself or with his few friends, without telling anyone, but it's not like it's a secret. All in all, he feels pretty dissociated from his father, and would rather be alone. He dislikes his former stage name and nickname "Fritzel", and would rather be called Fritz.

Future
Eventually, the two of them make up and bond, I haven't really decided how yet though. Fritz ends up getting his own routine at the park that he's in charge of. He mostly does stand-up comedy, often telling self-depreciating jokes. On the days he doesn't have his individual shows, he performs alongside Fizzarolli, like he wanted growing up. Yayay happy ending woohoo