I think one of the reasons why Smash Brothers manages to succeed in pulling together characters from so many universes and different art styles is because it doesn't take itself too seriously. The whole thing is designed to be zany and fun. I'm not saying a Sony Smash Brothers would be impossible, just that the whole tone doesn't quite feel right. Most of the popular Sony franchise characters on that list (e.g. Kratos, Nariko, Drake) and third party entries (Dante, Cloud, Leon) are from very "serious" settings, usually in an attempt to be seen as mature. I'm not sure it would work right to see them throwing baseball bats and green shells and fire flowers at one another. Similarly, if you were to do the reverse with a super "mature" setting, with blood and gore everywhere, how could you fit characters like Ratchet, Crash, or Spyro into the game?

It's also problematic that any "Sony" such list inevitably contains 50% or more third-party characters. You might as well call it "Video Game Smash Brothers" with that approach!

my top 5 would be:

- Crash Bandicoot
- Drake
- Ratchet
- Templar (killzone)
- Tanner (driver)

Alright ,
First Party - Buzz! , Patapons , Wander , Spike , Clank , Sweet Tooth , Jin Kazama , Daxter , Nariko , Drake , Sly Cooper , Ratchet , Kratos , Jak , Sora , Sir Daniel Fortesque , Parappa the Rapper , Heihachi Mishima

Third Party - Prince of Persia , Leon S. Kennedy , Sonic , Johny Napalm , Cortex , Dante , Spyro , Lara Croft , Snake , Crash , Cloud , Sephiroth



so , 30% third party , you could replace 2 of them with gta guys and that killzone person .

also , to sulla , thats true , but I don't think it will be as kiddie as nintendo.

 Man, Pit is a freaking angel with a bow that turns into swords, Kirby can eat you, R.O.B. is a robot, which is just awesome. They're all thugs.

If you are going to make an excuse about 3 of them , you have to make one about all of them.

Sony doesn't have a large enough first party of characters to make a game like Smash Bros. I don't even think most of you even know which franchises Sony actually owns, which is sad. The following series that some in this post THINK belong to Sony do not, Resident Evil, Grand Theft Auto, Crash Bandicoot, Tekken, Final Fantasy, Kingdom Hearts, and Metal Gear Solid. I believe there are only two other publishers that could make a Smash Bros. other than Nintendo based on a killer rogues gallery and they are Capcom and SEGA.

For the sake of this post though, I'd use a small amount of characters so it doesn't get ridiculous:

Kratos-God of War
Ares-God of War
Drake-Uncharted
Ratchet & Clank(as one character)-Ratchet & Clank
Jak-Jak & Daxter
Daxter-Jak & Daxter
Nariko-Heavenly Sword
Sly Cooper-Sly Cooper
Gabe Logan-Syphon Filter
Patapons(An army as one character/controls just like Patapon does with rhythm)-Patapon
Chimera soldier-Resistance Fall of Man
Sweet Tooth-Twisted Metal
Golfer-Hot Shots Golf
Spike-Ape Escape

This looks like such a mismatched and boring lineup in my opinion. You've got some characters from E and T rated games going up against M rated bloodfest characters. 

What about Master Chef from Halo?

Lol what about an MS Smash Bros. it would just be Master Cheif staring into space

 Wait, there's rules now?

There's plenty of worthy characters 

and this isn't even a complete list of their currently owned franchises