Chibitortomon (Fusion)

ChibiKamemon is a member of Xros Heart in Digimon Xros Wars. It resembles a miniature Kamemon.

Shoutmon X2 (+ ChibiKamemon)
Shoutmon X2 (+ ChibiKamemon) is a DigiXros of Shoutmon X2 and ChibiKamemon. ChibiKamemon becomes a shell for Shoutmon X2's back. Like a turtle, Shoutmon X2 can retreat into the shell to avoid an attack, and can also breathe underwater.

Episode 6
Chibikamemon officially become a member of Xros Heart with shoutmon's help.