Guys I've just found something on the internet that tells us about Capcom, Sega and Nintendo. There was a flagship between the three of them.
I don't want Megaman on there but it seems like he's onDefunct
Flagship — Nintendo, Capcom, and Sega, founded the joint venture Flagship to develop games and assist in the development of games. As of June 1, 2007 Flagship was closed . Working with Shigeru Miyamoto, they had developed The Legend of Zelda: Oracle of Ages and Seasons, The Legend of Zelda: The Minish Cap, Kirby and the Amazing Mirror and Kirby Squeak Squad.
also I'm not sure about this because it comes from Wikipedia but it is interesting. http://en.wikipedia.org/wiki/List_of...ndo_developers
Another reason for Megaman is that Capcom is helping one of Nintendo's second party developers to make We Love Golf (Wii)
also I think I know why Sora was on Sak's poll
Jupiter helped make a Pokemon game.Jupiter — Developers of the Nintendo DS game Spectrobes, the Pokemon Pinball series, and Kingdom Hearts: Chain of Memories among other titles.
 Current first-party
Brownie Brown — Software developer consisting of former members of Squaresoft. Responsible for the Magical Vacation (Magical Starsign outside of Japan) series, and for supporting Shigesato Itoi and HAL with Mother 3 (Lucas is on brawl) (Japan only).
Intelligent Systems — Established in 1986 by former members of Nintendo Research & Development 1 to develop games. Responsible for Metroid, Fire Emblem, Paper Mario, Kousoku Card Battle Card Hero and Famicom Wars franchises.
Monolith Soft — Founded in 1999 by a former member of Square Co., Nintendo bought a majority stake on April 27, 2007 from Namco Bandai. Developer of the Xenosaga series, as well as Namco x Capcom, and the Baten Kaitos series. Currently developing the upcoming Wii title Disaster: Day of Crisis.
and the reason why Snake was on Brawl is because of this
so maybe the newcomers from third party may come from companies that help make nintendo games.Konami — Created the Nintendo GameCube exclusive DDR: Mario Mix