Knuckles the Echidna (Japanese: ナックルズ・ザ・エキドゥナ, Hepburn: Nakkuruzu za Ekiduna) is a fictional character and one of the main characters in Sega's Sonic the Hedgehog series. He is a red anthropomorphic short-beaked echidna who is determined and serious, but sometimes gullible.

What animal is Knuckles supposed to be?

Sonic's pals are also inspired by animals - Knuckles is an echidna, and Tails is a fox. Echidnas live in Australia and New Guinea; and are also one of only three mammals that can lay eggs! In some Japanese folktales the number of tails a fox has indicates how old and powerful it is. Maybe that's why Tails has two!

Are Amy and Knuckles hedgehogs?

Sonic CD introduced Amy Rose, a female hedgehog with a persistent crush on Sonic. Sonic 3 introduced Knuckles the Echidna, Sonic's rival and, later, friend. All five of these have remained major characters and appeared in dozens of games.