Lilies for purity. While Knuckles may not be innocent (having been in a relationship with Shadow in my gijinka fan-fic universe)...he does have a pretty pure soul. That's why he so stupidly trusts Eggman half the time. XD
Knuckles belongs to Sega, this human-form/gijinka design is my own. :)
Link
TheNextGenHero
I'm telling you...cactus xD