Death Battle Ideas 3

Rex Splode vs Katsuki Bakugo

Invincible vs My Hero Academia

Connection:

Both are arrogant, competitive, loud and cocky superheroes whose powers are based around explosions

Both have butted heads with the main character (Invincible and Izuku Midoriya) but overtime eventually became friends/rivals later on. Both are also part of a team said main character (Teen Team/Guardians of the Globe for Rex and Class 1A for Bakugo)