I've had some trouble with them in the past regarding an art trade, i had to pressure them into giving me an oc since they didn't provide a response to any of my progress checks. I'm so sorry this happened to ya man!
(will edit as situation progresses, all edits r in spoilers!) user CanIHaveIt also known as ilostmypage and iamdisgusting and Yohioloid-Producer, kyuketsukineko has blocked me for the sole reason of: i asked for compensation for some characters of mine. a while back they made a (now deleted) thread offering art in exchange for characters. i gave them the characters and they said they would provide the art. 8 months later, no art. attached are the transfer logs for the three characters.
(vvv continuation of above to include character name)
as well as our pm logs.
After this last message, they proceeded to block me, only unblocking me to send this message:
i have also contacted them on SCRATCH of all places, with no response. 
I'm extremely upset about this as i have sentimental attachment to all of my ocs, even the ones i trade away. im upset that i didn't get my compensation, and when asked was mocked, and that even though this user had stolen/scammed my characters they never gave me my end of the deal, so users beware or you'll lose your characters too. i hate making threads like these because my anxiety usually goes through the roof but i genuinely care about all of my characters and i don't want anyone else to feel like i currently do.
(EDIT: LINKS TO MY STOLEN CHARACTERS
https://toyhou.se/1514241.vern
https://toyhou.se/1514209.trixie (huge shoutout to Gundham-Tanaka for returning one of my babs!! they're the sweetest and didnt even accept compensation aaa!!)
https://toyhou.se/1445513.pending )
(EDIT: ART REMINDER 
)
(EDIT!! IMPORTANT INFO BY Owlstickers !!!
"Thank you for making this thread. I know you said you get anxiety through the roof about making PSAs or the like, but this is genuinely helpful because you were absolutely, 100% scammed. This user has no sense of accountability, remorse, regret, or a shred of empathy for you. They mocked you, refused to compromise, and ultimately I hope they get IP banned for this behavior.
Just in case they try to change their username again, here's a link that'll show any of their new usernames.
https://toyhou.se/~tickets/create/user/223491 (It's the report feature, but it has their unique user ID that is impossible to change)
Their new account is also MelancholicDespair as stated by one of their bulletins.
In case they change their username on there as well:
https://toyhou.se/~tickets/create/user/236659
This user ALSO was called out for retrading freebies in the past. Their "apology" bulletin here, which was basically just blaming it on being a child:
https://toyhou.se/~bulletins/166245.apology-
Screencaps: https://imgur.com/a/LdEkn48
General PSA thread post: https://toyhou.se/~forums/5867.service-reviews/13734.general-thread-for-psas?page=139
The General thread posts also assumes that all the "friends" linked in the comments are actually just their alt accounts since they have the same exact art style and naming theme for each account. Each account is also now closed, which leads me to believe the assumption was correct. Their alts were:
Mono = MonoDabMaster
Piko/Inky = PikoTheDistortionist
Kokichi = Kokichi__Oma
Hopefully this helped!"
tysm Owlstickers!!)
(EDIT: latest pm 
)
(EDIT: more dms 
)
(EDIT
)
(EDIT: they're already ip blocked but using a vpn 
)
(EDIT FROM WindWaken
"This user seems to have a long history of issues. (not sure if all of these were linked already + some of their messages in the links are gone now but)
1
2
3
4 (they went by crispykinnie/crispycakechild last fall, I recognize the art style)
I've also had issues with them failing to complete an art trade and keeping my half still uploaded. When I asked them to remove it I got the excuse that they were grounded and couldn't. The piece did get removed because it looks like the whole character was deleted but yeah.
I honestly think we just need a mega thread/mega bulletin (?) for them at this point because they cause so many problems and switch usernames a lot to continue scamming.
Very sorry they got you too :C
I don't think you mentioned it but reporting them may help? If the admin sees the ticket they could probably help you with this. But that's a big if." )
(EDIT ft. help from Vaughn !!
"Sorry if this has already been pointed out, but I didn't see it mentioned. The user who owns the third character, the one who brushed you off in the comments when you told them it was stolen and still has it up for offers (https://toyhou.se/1445513.uftof/comments), I'm pretty sure they're also CrispyCakeChild/CanIHaveIt.
If you check the username logs on the "CanIHaveIt" account, you'll see that "CreepypastaSatoru" was a past username: https://i.snipboard.io/8LO2P6.jpg.
There's a bulletin on the "CallMeObsequious" profile, that talks about them wanting to get away from their past as "ArcSanity/CreepypastaSatoru". In the comments, they tell someone to search up their apparent past usernames for more information: https://i.snipboard.io/fslhUF.jpg.
The "CallMeObsequious" profile also asks to be called "Cakey".
In short, if they are all indeed the same person, CanIHaveIt is deliberately keeping the final character from you."
tysm Vaughn!!)
(EDIT: ANON
They just posted this lengthy rant onto their Tumblr blog today:
There's also this post, which is a statement other folks are pointing to but I haven't seen the actual image for yet:
BabieofDaYear argh, it sucks major ass that this jerk wont give anyone what they promised :(
BabieofDaYear haha yeah,,, im gonna reach out to the new owners and see if i can get my babs back
Thats good!
One thing I do is have a "Ocs Ive Traded" Favorites folder! Its way easier to keep track!
OMG THATS SO HELPFUL
theres this one girl I really miss hopefully I can find her! Good luck on your search too!