The Virus race has 3 members in Shin Megami Tensei II, listed here from the lowest level up. Each one links to its page with stats, skills, affinities, and drops.
Computer virus programs made visible.
Shin Megami Tensei II instruction manual (Super Famicom), Atlus, 1994, p. 50. Translated from the Japanese by 101Leafy.Races by alignment Shin Megami Tensei II instruction manual (Super Famicom), Atlus, 1994, p. 47