Four

Four from Battle for Dream Island (BFDI) has a complex, unstable personality, shifting from a seemingly calm but sadistic and power-hungry host to a childish, insecure, and emotionally vulnerable being who fears abandonment, often using cruel, destructive powers (like zapping and screeching) for control, but occasionally showing empathy, especially after being multiplied by zero and evolving with his co-host X.

Appearance: Four from BFDI is a blue, crudely drawn, open-top numeral '4' with white eyes, stick limbs, and a squishy body