Gotta get working on references for artfight in july!!!

My user is also Ddevin1000 on artfight if your wondering, I try to revenge as much as I can, but I mainly draw designs I find appealing.

Great question! I think it depends how you go about the question, if you're thinking design wise, all of the character's have changed very much since their first designs I think it would be Blake aka Blade, who started as a bald guy with a cap like most characters.

If you're looking at it based on changes in their narrative importance it would be Gavin, who while yes was still a oversear for the multiverse, pie was not very important to the plot, they were originally just a side villian, not the almost mentor like slot he takes today.