Plaxum is a mermaid-like alien in season two of Voltron: Legendary Defender. He and his friends Swirn and Blumfump needed Lance's help to save their people from brainwashing. At first, they thought that Queen Luxia was brainwashed their people, but later Lance and Hunk found out that the space become plant-like monster resulted in brainwashing. And when Lance and Hunk were saved the water alien people, Queen Luxia began to act as the voice of his people and he helped Lance and Hunk to find their friends. And when Plaxum took out a jellyfish Lance fell in love with her.