The current guardian of the Master Emerald as warrior, a powerful ancient gemstone which is kept on Angel Island. Guarding it is his solemn duty to protect from anyone seeking to abuse it, as well as the sole surviving descendant of the echidna race from the Knuckles Clan. Known for his powerful and wild nature, his dominant traits are his super strength and the two spike-like knuckles on each of his gloves, from which his name is derived from, and which he can dig and climb walls with. He can also trap the wind under his dreadlocks to glide through the air. Knuckles is also one of Sonic the Hedgehog's oldest friends and rivals.

A loner by nature, Knuckles is independent, headstrong, and serious, yet gullible and short-tempered to a fault. He is entirely devoted to his duty, spending most of his time on Angel Island protecting the Master Emerald, and rarely cares about anything that is of no importance. When his friends and others are in need of his help, however, Knuckles can always be relied on, being willing to leave his home very often.

You can either go with his current voice style or Idris Elba's voice for Knuckles.