Palladium

In the first season, Palladium can be seen as a very nervous teacher with less confidence compared to the other teachers. He teaches Potionology. He takes the first year class out on a field trip to Black Mud Swamp where he instructs them to find their way using only the voice of Nature to guide them. Palladium is also the only teacher who is seen running the Simulation Room.

He aides in the battle against the Trix and celebrated their success with everyone at the end of the season.

In the second season he appears to be much more confident and muscular, having evolved his form since he's an elf. The evolution also caused him to be more strict with his students should they get out of line, case in point, when Amaryl was about to attack Stella, he stopped the spell and he threatened to expel Amaryl. He is also shown in various scenes with Professor Avalon, and when Avalon gets spit into his eyes by a plant, Palladium heals him.

He teaches second-year fairies technical charms.

In the episode when the Codex was taken from Pixie Village, it was shown that he was being used by the fellow professor and was an accomplice in the robbery with no education of the matter.

Palladium is rarely shown in Season 3 along with most of the other teachers. He is only shown in the background or in more unnoticeable roles.

In the episode "Alfea Under Siege" he and some of the students create a new magic barrier after the bewitched witches attacked and destroyed the original barrier.

He also attends a meeting held to discuss Faragonda's decision to accept Valtor's challenge and he voices out his suspicion of a possible trap.

Palladium has but a few amount of appearances in the fourth season. In the first episode, Tecna and Palladium had set up an obstacle course for the Winx Club to present before their students. In the second episode of the fourth season, he was setting up an AV for Faragonda's explanation of the Wizards of the Black Circle.

In "The Legendarium", Palladium is seen a few times during Faragonda's speech and anniversary party. He is seen again in The Secret Greenhouse where he is seen in a potion room transforming the Lori, Evie and Carol back to normal after the Trix had turned them into frogs and helping Roxy turn the crow back into normal. He also gave the Winx information about Eldora that she was once a teacher here at Alfea and that she had a greenhouse that still exists at the school.

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Palladium was seen running the Magical Reality Chamber as his students watch him. His appearance is redesign like Season 2.

Palladium appears briefly, as he is seen fighting against the witches' siege at Alfea. He wields a sword and fights against the army of darkness.

Palladium appears again in the fourth one hour special. He teaches his class while Flora daydreams about Helia, with the professor unhappy about her unfocused in class. Palladium also appears in Flora's daydream as a priest to marry the lovebirds.