Old enough so you can date him.
knuckles is 17 years old hope that helped! Knuckles is 16, according to the Sonic Heroes manual. =)
Knuckles is 15 or 16 in sonic x and games
Mickie Knuckles is 27 years old (birthdate: May 16, 1984).
17
Sixteen
knuckles is currently 16. or maybe 22. but im sure hes 16 :).
The answer is Knuckles the Enchilada, but she likes Shadow the most because she is always with him. She had a crush on Knuckles but since he wasn't paying attention to her, she is now in love with Shadow. Rouge used to have a crush on Knuckles, but now it is said that she likes both knuckles AND Shadow. P.s. Shadow does not like Amy or Takil. Rouge the bat loves Knuckles, and Knuckles loves Rouge back. In the one episode of Sonic, Knuckles is blushing when Rouge is next to him.
In Sonic Heroes hes 16 accordin to the maneul but since it is 2009 he is 20 years old, rouge is older than knuckles!!!!
knuckles is 15,in sonic the hedgehog 3.
Hi! Knuckles is an ECHIDNA (you say it like ikidna) Knuckles does love searching for treasure and is super strong. Sonic's faster than him and he does encounter Rouge the Bat, who also loves treasure. But Rouge steals treasure instead of finding it. Knuckles was born on Angel Island. He and Sonic are both good friends and rivals at the same time. Weird, huh? I'll post more info later. See ya!Knuckles is stoic and very good at kicking butt. NOT LITERALLY! He punches butt instead of kicking it.
Knuckles was introduced in "Sonic and Knuckles" as a rival to Sonic who tries to steal his Chaos Emerald. Their rivalry is still there, but now it's more of a friendly rivalry. BEST FRIEND though, I dunno... Tails has been with him since Sonic the Hedgehog 2, and they're really good friends.
In his appearance in sonic heroes knuckles is 16.