Marvel
| Name | Super Name | Code | Actions |
|---|---|---|---|
| Yeti | Yeti | Yeti | Show |
| Yellowjacket | Yellowjacket | Yellow… | Show |
| Yellowjacket (Rita DeMara) | Yellowjacket | Yellow… | Show |
| Xorn | Xorn | Xorn | Show |
| Xi'an | Xi'an | Xi-an | Show |
| Xemnu | Xemnu | Xemnu | Show |
| X-Cutioner | X-Cutioner | X-Cuti… | Show |
| Xavin | Xavin | Xavin | Show |
| Xarus | Xarus | Xarus | Show |
| X-23 | X-23 | X-23 | Show |
| Wysper | Wysper | Wysper | Show |
| Wundarr the Aquarian | Wundarr the Aquarian | Wundar… | Show |
| Wulff | Wulff | Wulff | Show |
| Wrecker | Wrecker | Wrecker | Show |
| Wraith | Wraith | Wraith | Show |
| Wraith (Zak-Del) | Wraith | Wraith… | Show |
| Wraith (Brian DeWolff) | Wraith | Wraith… | Show |
| Wraith (Hector Rendoza) | Wraith | Wraith… | Show |
| Worm | Worm | Worm | Show |
| Woodgod | Woodgod | Woodgod | Show |