I think that of all the franchise best main antagonists are: Vilgax, Kevin 11 (OS), ZsSkayr, Highbreeds, DNALiens, Diagon, The Faction (Malware, Dr. Psychobos and Khyber), Albedo, Lord Transyl and Maltruant.
I think that of all the franchise best main antagonists are: Vilgax, Kevin 11 (OS), ZsSkayr, Highbreeds, DNALiens, Diagon, The Faction (Malware, Dr. Psychobos and Khyber), Albedo, Lord Transyl and Maltruant.
ZsSkayr, HighBreed, and Vilgax.
Vilgax, Zs'Skayr, Highbreed, Malware. Malware might actually be a better villain than Vilgax. Sure, Vilgax scared kid Ben, but Malware terrified teen Ben to the point he didn't even want to fight him.