Io is a character found in the video game Dota 2. It is a ranged strength hero that fights for the Radiant faction.
Io, better known to long-time Dota players as Wisp, and still more commonly referred to as Wisp in general, is a strength support hero with a global ganking presence who is typically partnered with a single hard carry to deliver one of the scariest ganking combos in the game.
