Krosserdog became Spyke's primary Medabot following an upgrade from Cyandog. After repeated losses, Cyandog left Spyke and joined the Rockers. Spyke then acquired the rare Krosserdog model, one of only 200 units produced, masking his distress.

A reconciliation with Cyandog led Spyke to transfer its original Monkey Medal into the Krosserdog body. This integration renamed the unit Krosserdog while preserving Cyandog's core identity. The new body features spiky, dog-like ears, metallic designs, and a yellow cross on the forehead, replacing Cyandog's thunder symbol.

Krosserdog boasts improved combat capabilities compared to Cyandog. Its parts provide more accurate aim to compensate for lower raw power. During training and team robattles, Krosserdog sometimes displays clumsiness, such as accidentally striking ally Sumilidon multiple times. Yet it also shows unexpected effectiveness, like once eliminating two strong opponents while being ringed out alongside them, inadvertently saving Sumilidon from their attacks.

Krosserdog's combat style reflects the Monkey Medal's hand-to-hand specialization, now better aligned with its DOG-type chassis. This compatibility enhances its utility in Spyke's confrontations, though operational inconsistencies remain part of its character.