Steve: Capsy. You found this name by messing with a bottle cap.

Tony: Iron Heart. You call him this because even though he might act mean or selfish, you know that he always has a soft heart.

Bruce: Bill. It reminds you of Bill Nye.

Thor: Zeus. You have always been excited about lighting.

Clint: Katniss Barton. Since he loves the Hunger Games, you call him Katniss and had decided to add his last name with it.

Loki: Lokitty. Since you are an artist, you always like to draw Loki dressed up as a kitty.

~Kris534