Knuckles is a very unique character in the Sonic universe because he's never really friend's with anyone always on edge doesn't go away from the master emerald and go's solo most of the time, Knuckles can glide not fly that's why i don't count him as someone that can, Knuckles was from Sonic 3 and Knuckles a game split into to 2 part's and introduced hyper Sonic and the super emeralds and the thing that Knuckles value's most the master emerald, Knuckles live's on angel island and is 29 year's old, Knuckles has a height of 5ft 5in and classic Knuckles is 3ft 7in and here are his game's  Sonic 3 & Knuckles. Knuckles' Chaotix. Knuckles in Sonic 2. that's all his game's now a list of all his voice actor's so let's go Idris Elba in the 2nd Sonic movie Adam Nurada and Vincent Tong in Sonic prime Dave B Mitchell in frontier's Fred Tatasciore in Sonic drone home Travis Willingham in Sonic boom Dan Green in lot's of Sonic side game's Scott Dreier in Sonic advance 3 Ryan Drummond in Sonic shuffle Brian Drummond in Sonic underground Bill Wise in old Sonic movie and in japan Nobutoshi Canna in most thing's Subaru Kimura in 2nd Sonic movie Yasunori Matsumoto in old Sonic movie now we're done with the voice actor's again thank's to behindthevoiceactor.com for this information, i like Knuckles because he's strong and never give's up DID YOU KNOW:Knuckles absorbs enough Chaos energy to turn into Chaos, or "Green" Knuckles who's obstensibly a living Chaos Emerald