After being given kinetic energy based powers in a laboratory accident, Robbie Baldwin became the hero Speedball. He blamed himself for the Stamford tragedy and remodeled himself as Penance, but now he's back continuing to atone for his past as Speedball, as a trainer to the Avengers Academy. (1)
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- MARVEL COMICS: Marvel Cinematic Universe (New Warriors)
- MARVEL COMICS: New Warriors Power Pack
- MARVEL COMICS: Ultimate Spider-Man bio New Warriors
- MARVEL COMICS: Ultimate Spider-Man bio Speedball
- MARVEL COMICS: Ultimate Spider-Man Season 3 (Episode 3 Agent Venom)
- MARVEL COMICS: Ultimate Spider-Man Season 3 (Episode 5 The Next Iron Spider)
- MARVEL COMICS: Ultimate Spider-Man Web Warriors season 3