Mario's body becomes rainbow-colored, he can run at high speeds, and is invulnerable to almost anything. Since Super Mario Bros. 3, Invincible Mario's jump looks similar to Sonic's, in that they both curl into a ball and front-flip multiple times. It can't be found around bosses.
- The Rainbow Mario from Super Mario Galaxy, is a reference to this form, having pretty much every ability that this form has.
- This form might be called by some people Ultra Mario.