Rise of Nations II: Rise of Legends has some really good but complex designs on the Vinci side if you are looking for ideas.
I will put some images up tonight when I get home from work.
As for steampunk anime characters, I think Skuld (from AMG) would convert over well.
But among superheroes... I dunno. Batman, Ironman, Robocop, Inspector Gadget, Master Chief, and Gizmoduck are really the only characters I can think of off-hand that are defined by technology, not abilities. Superman is superman, doesn't matter what year it is (and Aquaman is useless in all situations).
But really a character has to be defined by technology in order to be any different in a steampunk setting, and in practice there tend to be very few such heroes because their strength also tends to be their weakness (that they are merely the product of man's intellect and will, not something that transcends man entirely). Every universe can tolerate a few such misfits, and they tend to shine when the transcendent qualities of their peers are turned against them, leaving the battle to those techno-specialists who possess the quality of being merely a very exceptional human.
An altogether different avenue for steampunk is to look at gaming. The aforementioned Rise of Legends, as well as Warhammer 40k, and a whole slew of FF and FF-like games have huge amounts of steampunk content.
AnimeIowa 2009 Convention Co-Executive & Tech Department Head
Last edited by AI_Sparky : 02-11-2009 at 11:27 AM.