Disney Tsum Tsum

Disney Tsum Tsum (ディズニー ツムツム) is a line of Japanese stackable stuffed toys based around characters under various Disney properties. There are multiple sets of physical Tsum Tsums based on Kingdom Hearts characters, and numerous Kingdom Hearts characters have been featured as Tsum Tsums in the LINE: Disney Tsum Tsum mobile game.

Kingdom Hearts Union χ collaboration
Disney Tsum Tsum is represented in Kingdom Hearts Union χ through a collaboration event celebrating the Kingdom Hearts 15th Anniversary. This event included the Heartless Tsum, a Limited Time Raid Boss in available exclusively to Premium members; the, , , and limited time s; and various Tsum-based Avatar items.