Batman, Superman, X-Men, Spiderman, Avengers, Justice League, I tried my hand at Yu-Gi-Oh! once or twice too, many different micros all over lol. To many to really remember all of them.
Here is something relatively new, my character Golden. Basically he can slip in and out of any universe at any point in its history.
He is one of my use all fanfiction villains.
Made this for a guy on RangerBoard
And here are some I made with the help of a friend of mine.
Oh and a really really really old one
Masked Rider (the crappy first american show one)