Nemesis

After several failed experiments, the series 3 Nemesis named "The Pursuer" was the first B.O.W. without brain damage and mental retardation. What an accomplishment.

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A very angry mutant who hates the firmament, and all of the one associated with them, including a small team of cops.

Season 3
During the Dimensional Merge phenomena, Nemesis suddenly appeared coming from the future, apparently seeking someone or something (Probably S.T.A.R.S.).

Season 0
After his involvement in Raccoon City, it was thought no more Nemesis-T Types were left. But that was wrong as somehow, a master of Pokémon had somehow acquired one at some point.

Episode 5

Kane agreed to fight with his Pokémon Nemesis to "relieve the past", unluckily for his opponent.

Episode 12

Possibly came into possession by Red.

Episode 14

Released (or discarded) by Red.