ID Masks can change someone's appearance into a completely different one.
Max Tennyson used an ID Mask to be invisible, which shows that they also can be useful for camouflage.
ID Masks can also be used to copy objects, as seen in , when Ben thought to use Kevin's ID Mask to copy the Ultimatrix symbol and place it onto Vulkanus' back so that the Techadon Robots would attack him instead of Ben.
The image produced by the ID Masks can be momentarily disrupted by flashes of lightning. They can also break and stop producing an image exposing the wearer.
|Magister Labrid||Human in trench coat|
|Various DNAliens||Humans (including Edna and Tyler)|
|Kevin Levin||Himself (during his mutation)|
|Pierce Wheels||Teenage boy|
|Synthroid||Human in trench coat|
|Fistrick||Ben Tennyson (16 years old; white hooded jacket)|
|Solid Plugg||Ben Tennyson (11 years old)|
|Liam||Ben Tennyson (16 years old; Tenn-Speed rider suit)|
|Corvo||Ben Tennyson (15 years old; green jacket)|
Ben 10: Alien Force
- Ben 10 Returns: Part 1 (first appearance)
- Ben 10 Returns: Part 2
- Max Out
- Inside Man
- Vengeance of Vilgax: Part 1
- In Charm's Way
- Busy Box
- Time Heals
- The Final Battle: Part 1
Ben 10: Ultimate Alien
Ben 10: Omniverse
- In Alien Force and Ultimate Alien, the ID Masks glow blue when used but in Omniverse, they glow green.