is silver the hedgehog a japanease character insted of a sega character?

Nope, definately Sega

What do Ты mean by Japanese character?
Cus if Ты mean SEGA of Япония then i don't think so.

He's made by sega and sega is a japanese company and sega of Япония came up with silver so he's both but еще of a sega character