Sometimes, you just come up with an overpowered idea for a character.

I've got one for Shadowrun. An augmented strength 15 troll, wielding a rating 15 bow. 17P damage per attack. That's more than an assault cannon.

Mando rifle-specialist in a Star Wars game. 5d12 per attack. For comparison, a lightsaber does 2d8 or 3d8.

Titan-blooded halfling Wu Jen/Eldritch Knight. Start as a small creature wielding a gargantuan warhammer. End up as a colossal creature with a warhammer four size categories above colossal, dealing 36d6 damage a blow.

any outsider from dnd 3.5 (tiefling or aesimar) + alter self and polymorph to transform into other outsiders and with polymorph you don't need to be familiar with what you want to transform into...just a classic horrible combo. I had one a tiefling sorcerer doing that all day...that wasn't right.

Pun-Pun!

Alternity -- mutant human, maxed out dex and hyper dexterity. Fought with stutter guns.

Had a severe case of ADHD, to say the least.

A core-only Wizard. (or cleric, or druid)

Any Nobilis.

Any Exalt.

any ninjaguineapig