Zemerik is the leader of the Sark and one of the main antagonists of the first season alongside with Captain Kalus. He is the one of the few Sark who can speak as well as Zug, Tors-10 and Zorax.
Zemerik, Zug, and the Zurk were built by Krytus and his army to aid in his conquest of the Blue Sentient planet. He turned on Krytus and his team, imprisoned them, and conquered the Red Sentient planet with ease. Sage worked with Zemerik for a brief time before his plans turned to world domination. Later on, he met Vert Wheeler, the first member of the Battle Force 5, in a Battle Zone and sent his lieutenant, Zug, after him. Vert, however, escaped back to Earth. Three Zurk followed him through the portal, but Agura Ibaden, Stanford Isaac Rhodes, Zoom Takazumi and Sherman and Spinner Cortez helped him destroy them. Zemerik watched these events from the Sark Homeworld and declared that he had a new planet to conquer.
Zemerik, Battle Force 5, and the Vandals had several battles in season one. In Axis of Evil, Zemerik proposes an alliance with Captain Kalus and his Vandals. Kalus reluctantly accepts, but secretly plans to betray Zemerik. The two armies manage to get to Earth, locking Battle Force 5 in the Battle Zone. Zug used a drill to break into the battle key vault, but Battle Force 5 catch up to and confront the Zurk. Sage tries to destroy the Battle Keys, but they end up binding together and opening a new portal. All the Sark and the Vandals are pulled in other than Zemerik and Kalus. Kalus pushes Zemerik in, but the Sark uses his whip to pull Kalus in.
And he is voiced by Corey Burton in the English dub and will be voiced by Jouji Nakata in the Japanese dub.