| Waldo |
| Walters, Jennifer |
| Warbird I |
| Warbird II |
| Warhawk I |
| Warlock III |
| War Machine I |
| Warpath |
| Warstar |
| Wasabi No-Ginger |
| Water Witch |
| Watoomb |
| Watson, Kristy |
| Watson, Mary Jane |
| Webwing |
| Le Wendigo I |
| Le Wendigo II |
| Le Wendigo VIII |
| Whedon, Evangeline |
| Whiplash II |
| Whirlwind |
| Whiteout |
| Whiz Kid |
| Whizzer |
| Wiccan |
| Wicked |
| Widget |
| Wild Child |
| Wildheart |
| Wildside |
| Wilford, Betsy |
| Windshear |
| Wing II |
| Wing, Colleen |
| Winters, Nance |
| Wisdom, Pete |
| Witchfire |
| Wither |
| Wiz Kid |
| Wolf Cub |
| Wolverine I |
| Wolverine V |
| Wolverine (films) |
| Wonder Man |
| Wondra |
| Woo, Jimmy |
| Worm I |
| Worthington, Kathryn |
| Worthington, Warren Jr. |
| Worthington, Warren Jr. (films) |
| Wraith I |
| Wraith III |
| Wraith (films) |
| Wrangler I |
| Wu, Leiko |