Brunt
Scorpius' general who kidnapped the Galactabeasts, he was thwarted by Maya and Scorpius punished him for failing him. He was never seen ever again.
"Race to the Rescue"
Radster
Radster confronted the Rangers once Brunt retreated and then he himself retreated when the Rangers released the Galactabeasts. He later came back with Furio to Terra Venture and was destroyed by the Lion Galactabeast.
"Race to the Rescue"
Horn
Furio brought in Horn, who had the Transdaggers in his possession. His aim was to take the Ranger's Quasar Sabers. He had the Stingwingers melt down weapons. He was defeated by the Lion Galactabeast. He was revived by Hexuba's Lost Galaxy graveyard.
"Rookie in Red" & "Hexuba's Graveyard"
Gasser
Gasser was dispatched by Furio to put the Terra Venture colony into a deep slumber with his distinct gasses. He turned the Galactabeasts into stone. He was destroyed by the Galaxy Megazord. He was later revived by Hexuba.
"Homesick" & "Hexuba's Graveyard"
Mutarnrum
Mutantrum disguised himself as Mike and got hold of the Lights of Orion. He was destroyed by the Galaxy Megazord.
"The Lights of Orion" & "Hexuba's Graveyard"
Wisewizard
Wisewizard was sent by Furio to find the Lights of Orion and he believed that they were hidden in oridinary cameras. He attacked Kendrix at Carolyn Picket's photo shoot. He had a notebook he would take out pages that would explode on his victims. Wisewizard was destroyed by the Galaxy Megazord.
"Double Duty"
Quakemaker
Believing the Lights of Orion were in the soil of Terra Venture, Furio sent Quakemaker who buried stakes shoot from his mouth on the ground to make it shake. Elsewhere, Furio soon directed Quakemaker where to place more stakes. On Furio's command, earthquakes began in the colony in their various locations. After the quakes, however, the Lights did not emerged. Quakemaker was destroyed by the Galaxy Megazord and then revived by Hexuba.
"The Blue Crush" & "Hexuba's Graveyard"
Ruptor
Ruptor attacked Kendrix who supposedly had the Lights of Orion, the Magna Defender stopped him. He managed to get the stone in which the lights were in anyway. Trakeena directed Ruptor to take care of the Power Rangers and he grew giant to only be destroyed by the Galaxy Megazord.
"The Magna Defender"
Samuron
Samuron stole another stone supposedly containing the Lights of Orion. He hit the stone ith increasing power until the third strike broke the hammer's handle apart. Apparently nothing had withstood the crash of his hammer. Magna Defender destroyed Samuron.
"The Magna Defender"