|Knuckles the Echidna|
|Name||Knuckles the Echidna|
|Franchise||Sonic the Hedgehog|
|Vehicles and/or Gadgets||None|
|Occupation||Guardian of the Master Emerald, Member of Team Sonic, Treasure Hunter|
Knuckles the Echidna is an anthropomorphic echidna and the current guardian of the Master Emerald, a powerful ancient relic which is his solemn duty to protect from anyone who wants to abuse it. He is also the sole remaining descendant of the Knuckles Clan and last of the echidnas on earth. His dominant traits are his superhuman strength, and the two spike-like knuckles on each of his hands, from which his name is derived from, which he can use to dig with and climb up walls. He can also trap the wind under his dreadlocks to glide through the air. A loner by nature, Knuckles is independent, headstrong and serious, yet gullible and short-tempered to a fault. He is fully devoted to his duty, spending most of his time on Angel Island protecting the Master Emerald, and rarely cares for anything that is not important. When his friends and others are in need of his help, however, Knuckles can always be relied on being willing to leave his post and prove himself a true and good-hearted hero. He is also one of Sonic the Hedgehog's oldest friends and rivals.
- He is voiced by Travis Willingham, who voices him in the Sonic Boom animated series and all Sonic games released since 2010. Willingham also voices Superman and Lex Luthor.