Vilevine launches vines at the Ranger's morphers not permitting them to morph, the vines can't be removed and the Rangers take the Max Solarzord out to space to remove the spores. He is destroyed by the Omega Megazord.
"As Time Runs Out"
Freezard can freeze people frozen solid. He also sucks four rangers into his stomach with a laser. The Red Ranger has a showdown against him with his Thermo Blaster and releases the Rangers but he is frozen solid. It was destroyed by the Omega Megazord.
"In the Freeze Zone" & "Sorcerer of the Sands"
The Rangers take on Infinitor and his seemingly indestructible shield. Joel's quick thinking gives them the upper hand, and forces him to retreat. Infinitor returns to blast Angela's car to trap her brother Clark. He is brought down by the Blue and Green Ranger's Mega Battle armors and destroyed by the Omega Megazord.
"The Mighty Mega Battle"
Birdbane is sent to look for a powerful egg, brought down by the Rescue Bird's Unilaser and then destroyed by the Supertrain Megazord.
"The Great Egg Caper"
Memorase erases Chad, Carter, Kelsey, and Joel's memories of ever being rangers. Dana takes him on her own but then the ranger come in and they destroy him with the Lightspeed Solarzord.
"The Last Ranger"
The Gatekeeper
The Gatekeeper transports the Rangers into the demon underworld, he uses his staff to summon the monster spirits, which the Rangers find they cannot destroy. The Rangers destroy the gatekeeper's staff. When the monster spirits are out of control, the Gatekeeper and Olympius end up trapped in the underworld and some of the monsters escape. Olympius gets more power and the two escape.
"Sorcerer of the Sands" & "Olympius Unbound"
Furnace Monster
This ghoulish apparition came from the underworld and fought with two other monsters and was defeated by the Supertrain Megazord.
"Sorcerer of the Sands"
The rangers faced this nameless monster when they enter the demon underworld.
"Sorcerer of the Sands" & "Olympius Unbound"