Oh God I have a small hoard of them.
Error was the first one I started using. The original character was made by CrayonQueen but its a character anyone can use. At the time he was a very different character type compared to what I usually did so it was a challenge.
Ink was the second one I used. He is another character made by someone else but with permission for others to use, this time by Comyet. I made him shortly after watching Underverse, although he does not act anything like the version in that series.
Photo is my own creation entirely. He's a nervous guy and I don't use him that often because his anxiety tends to bleed into me while I roleplay.
Inkstone came from a joke about making Ink creepy. He is a glitched out and unhinged version of Ink. He tries his best though.
Acrylic is very much a WIP and another AU version of Ink.
E is an AU version of Error. He's just a kiddo.
Bandit is a character I made then just kinda abandoned.
Nightmare is my most recent one and I am currently shamelessly favoring him. Don't have art of him yet.