Ryu

Ryu is a character who appears in several upon several VG Mania works, being one of the board's most re-occuring established characters. Ryu appears as a playable character in, among other games, Super Smash Bros. Clash, Street Fighter VERSUS, Mega Man Versus, Mega Man vs. Ultimate Marvel vs. Capcom 3, Capcom vs. SNK 3: Match of the Eternity 20XX, Nintendo vs. Capcom: Smashing Generation of Heroes and possibly more than that. It borders on being a running gag, really.

Ryu was the 5th/6th character confirmed for Sonic's Creations: The Collection alongside Spire; he was announced as a Street Fighter VERSUS character.

In Sonic's Creations: The Collection
Ryu appears in the second trailer as a central character. He starts by walking through the streets of Blackpool and fighting off all who challenge him, which usually went horribly for the challenger. He soon found an invitation to the Clash of Dimensions Invitational; specifically, it was Dameon's invite to that tournament, and he wanted to find out more about it as it was entirely new to him.

He soon encounters Sylux and stays at his house briefly, then after Spire leaves is confronted by Pudgion. Pudgion wanted to test Ryu's fighting ability and much to his surprise knew Ryu was good. Ryu then left Sylux and teamed up with Pudgion and Dameon to investigate the real purpose of the merged world and the Power Crystals.

Trivia

 * Ryu was actually added late into the thirty character roster selection process for SC:TC, being the 29th character to be finalized. The only one who came later was Dhalsim, also an SF VERSUS character.