sennin mode

a.k.a. Sage Mode

An empowered state which enhances a user's abilities. Users of a perfected Sage Mode will gain pigmentations around their eyes, with some changes on their irides.

An imperfect Sage Mode, however, will result in the user also gaining animalistic traits.

Sage Mode users include:

Uzumaki Naruto (Perfect)
Namikaze Minato (Perfect)
Senju Hashirama (Perfect)
Jiraiya (Imperfect)
Yakushi Kabuto (Perfect)

Variations of this state also exists: A combination with the Tailed Beast Mode (Tailed Beast Sage Mode) and an advanced version gifted by Ootsutsuki Hagoromo (Six Paths Sage Mode).