He infected the KO-35 Rebels with corals to grow on them on the planet Centaur B. He and Darkonda, disguised as Yatru fooled the Rebels. He was destroyed by the Astro Delta Megazord.
"Zhane's Destiny"
Lizwizard could wrap his long tongue around someone and switch places with them. He did so with Cassie and got her injured when Carlos meant to hit Lizwizard. Lizwizard could also become invisible. Adam, the Black Ranger fought him and Lizwizard was finally destroyed by the Astro Megazord Saber.
"Always a Chance"
Batarax brought out sonic blasts from his ears and weakened the Astro Megazord with his new frequency. Professor Phenomenus hit Batarax with an alternate beam, enough for the Rangers to distrct the monster and destroy it.
"The Secret of the Locket"
To prove her loyalty to Dark Spector, Astronema sent this monster after Andros. He could shoot a group of needles from his arm. He was destroyed by the Mega Voyager.
"Astronema Thinks Twice"
Figthwing mistook Bulk, Skull and Professor Phenomenus for the Power Rangers, who he was sent to destroyed by Astronema. He was capable of flight, he was enlarged and destroyed by Mega Voyager.
"Dark Specter's Revenge Part 2"
The Power Rangers fought this monster at human height and then was grown huge and it had the ability to emit electricity. It was destroyed by the Astro Megazord.
"Rangers Gone Psycho"
Datascammer could emit blasts from his mouth and scanned informaiton from the Power Rangers. He gave the information to Astronema. He was destroyed by the Mega Voyager.
"Carlos on Call"
He was Seymour's master and he was after the poor little alien. Once he found Andros with Seymour, he believed he was trying to steal him. He requested to see Astronema and on the Dark Fortress, he told her his situation. He turned humans to stone on Earth. He turned Andros' lower legs into stone. Ashley detected that Jakarak's weak spot was between his eyes. He also truned the Astro Megazord partically to stone. Delta Megazord shot the monster and the latter returned to normal and Jakarak was destroyed by the Astro Delta Megazord.
"Andros and the Stowaway"
Seymour was a cute little Anglefish-like alien from Tirna that ran away from his master Jakarak and was saved by Andros. Andros told Seymour to scurry away but he stowawayed on the Astro Megaship. Seymour had an insatiable hunger and eventually grew to an adult form. After confronting his former master, Seymour was teleported to Tirna and met a cute female alien.
"Andros and the Stowaway"
Vacasacker sent people to Astronema's Secret City from a beam. A little friend of the Rangers, Silvy forced Andros to use his new Battlizer against Vacsacker. Vacsacker was ultimately destroyed by the Mega Voyager.
"Mission to Secret City"
He was a humvee tracked down and hunted the Power Rangers. It found a formable opponent in Zhane's Galactic Rover. When grown, he took a robot form and was Mega Voyager jump-punched Tankenstein, took his sword, and stabbed him in the face, causing him to grab the Mega Voyager and lift off high above the city. Tankenstein exploded in a massive fireball in the sky, taking the Mega Voyager with him. The Mega Voyager was destroyed, however the Rangers managed to survive.
"A Line in the Sand"