Marvel
| Name | Super Name | Code | Actions |
|---|---|---|---|
| In-Betweener | In-Betweener | In-Bet… | Show |
| Indra | Indra | Indra | Show |
| Inertia | Inertia | Inertia | Show |
| Infectia | Infectia | Infect… | Show |
| Inferno (Dante Pertuz) | Inferno | Infern… | Show |
| Ink | Ink | Ink | Show |
| Invisible Woman | Invisible Woman | Invisi… | Show |
| Ion | Ion | Ion | Show |
| Iron Cross | Iron Cross | Iron-C… | Show |
| Iron Fist | Iron Fist | Iron-F… | Show |
| Iron Lad | Iron Lad | Iron-L… | Show |
| Iron Man | Iron Man | Iron-M… | Show |
| Iron Man 2020 | Iron Man 2020 | Iron-M… | Show |
| Iron Monger | Iron Monger | Iron-M… | Show |
| Iron Patriot | Iron Patriot | Iron-P… | Show |
| ISAAC | ISAAC | ISAAC | Show |
| Isaiah Bradley | Isaiah Bradley | Isaiah… | Show |
| Isbisa | Isbisa | Isbisa | Show |
| Isolationist | Isolationist | Isolat… | Show |
| It! The Living Colossus | It! The Living Colossus | It-The… | Show |