Poochi is a digital dog, owned by Ken. Origanally developed by Professor Utonium to be Ken's playmate. When Ken destroyed the iceberg with Chemical Z, Poochi got hit by a white Z-Ray and said "That was intense." After Poochi got hit by the white light, he gained the ability of Speech and a sixth sense to sniff out Monster (creatures or people affected by black light emitted from Chemical Z) activity.
Poochi appears only in the anime.