Marvel
| Name | Super Name | Code | Actions |
|---|---|---|---|
| King Bedlam | King Bedlam | King-B… | Show |
| Kingmaker | Kingmaker | Kingma… | Show |
| Kingpin | Kingpin | Kingpin | Show |
| Kirigi | Kirigi | Kirigi | Show |
| Kismet | Kismet | Kismet | Show |
| Kitty Pryde | Kitty Pryde | Kitty-… | Show |
| Kiwi Black | Kiwi Black | Kiwi-B… | Show |
| Klara Prast | Klara Prast | Klara-… | Show |
| Klaw | Klaw | Klaw | Show |
| Kleinstocks | Kleinstocks | Kleins… | Show |
| Komodo | Komodo | Komodo | Show |
| Korath the Pursuer | Korath the Pursuer | Korath… | Show |
| Korg | Korg | Korg | Show |
| Korvac | Korvac | Korvac | Show |
| Korvus | Korvus | Korvus | Show |
| Kraken | Kraken | Kraken | Show |
| Krang | Krang | Krang | Show |
| Kraven the Hunter | Kraven the Hunter | Kraven… | Show |
| Kraven the Hunter (Alyosha Kravinoff) | Kraven the Hunter | Kraven… | Show |
| Kraven the Hunter (Ana Kravinoff) | Kraven the Hunter | Kraven… | Show |