One is a video game character from Japan and the other an American invention. It's pretty odd seeing them together in the same universe.

But it's cool nonetheless. Now I want to see SatAM Sonic and Fox hanging out at a bar somewhere

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~When you feel lost in life, just stop and enjoy the scenery~
-IZZY

It could happen since Sega is no longer making gaming platforms...in which now-a-days most Sonic games are done on a nintendo system if not spanning out to the PS3 and 360...and the DS and 3DS...heck...seeing how Star Fox has such a small franchise in terms of game releases...pretty much all of Fox's popularity comes from the Smash Bros series because he's pretty much the best fighter out of everyone else...not to mention his reputation for being fast in the Smash Bros universe is what made him enter Sonic's territory...because they're both fast...Sonic's just faster...but Fox has been fighting longer since he was in the original N64 version where it was just Super Smash Bros.

But on a side note...both franchises have gone astray with mediocre releases...Star Fox's best game to date was Adventures for the Gamecube, sad to say the game was still incomplete and originally wasn't mean't to be a Star Fox game in the first place....Star Fox Adventures' real name during the beta development was called Dinosaur Planet and Krystal was originally mean't to be the main character...and the game itself was mean't for the N64 just like the original Legend Of Zelda Orcarina Of Time, you can compair since both games have identical gameplay. The only reason it became a Star Fox game was because of the possible game console generation gap and the impending release date which left a lot of content from being used. As for Assault...mediocre at best...when word of the game got out...people were expecting another Adventures styled game which really would've been better...but nope...nintendo tried to go back to its roots and failed...as for Command...in my own opinion...that game alone is what ruined the franchise...not just because it was a DS release...but because of what happened in the game itself...better off to mark that game off as a spin off instead of bringing it into the main franchise storyline...and then there's the fact that Star Fox has had a few unreleased games...one of them was gonna be called Armada which probably took place directly after Adventures and before Assault...but rumor has it that the game got destroyed before release or something like that...there was even word of it in an old issue of game informer where it talked about Armada but showed a screen-shot of Assault instead.

As for Sonic...I don't know what to say about his current modern releases...ever since Adventures and Adventures 2 Battle for the Gamecube...Sega just hasn't been able to get back on their game with their mascot...and surprisingly enough...Sega of America has never released or made a game that revolved around the SATAM storyline...ever since "Next Gen" Sonic came into the fray, it's like everyone forgot about Sally, Rotor, Antoine, and Bunny...they pretty much got replaced by the X cast of Sonic by characters like Rouge, Shadow, Blaze, Cream and Cheese, along with Silver and Big...can't truely say Amy since she first debuted in the Sonic CD for the Sega Saturn. As for Knuckles...well...way back he had his own comic and cast which set his own personal story apart from Sonic's...even Sally and Tails had their own individual comics. As for side characters like Vector, Charmy, and Espio...they were in Knuckles old comics so they're actually original despite not looking like it...heh...quite a history for both franchises eh?