User blog comment:Smash The Echidna/Ask STE's Characters/@comment-5842470-20150804051905/@comment-1942179-20150804060043

"Sure, if you don't wanna count Kitty. I do collab projects with my friend Lucy all the time. She usually makes fun little gadgets and nick-nacks by herself, so it's always interesting to hear her ideas and whip something up together. I still remember when we tried to make a remote controlled paper airplane when we were younger."

"On a more serious note, We did team up in order to create the Chaff Gun. We needed that to sneak into a well-secured enemy facility some years ago. Not long after that, I worked with Tails to create the Force Phaser for similar reasons. (And yes, Kitty helped both times.)