Treant

The Treants are magical creatures that appear in Season 6.

History
They are ancient, human knights, who shape-shifted into huge trees. According to Flora, they are good beings that are full of life with just a single touch. Because Selina mentioned that she awakened them from torpor, they must have fallen into deep sleep long ago.

"The ancient knights, who took the shape of huge trees."

Appearance
They have shapes of huge trees (as the story) with branches on their head and two branches in two sides of each one as hands, but there are only leaves on the branches that are not their hands. They can walk on their roots (if awake). Their eyes are red if evil because they are ordered by Selina via the Legendarium but brown if asleep. They have beards and faces of elderlies.

Season 6
In "The Flying School," Selina awakens these beings against Linphea. They kept Linphea's fairies and warriors hostage during the Winx's fight against the witches.

In "Bloomix Power," Flora, with her new Bloomix powers, stabilizes them by planting their roots back into the soil as Daphne instructed.

Magical Ablities
They are able to attack like normal humans do.

Weakness
According to Daphne, their weakness is their roots. Once the roots are firmly planted into the ground and made contact with the soil, the treants will re-stabilize.

Trivia

 * Treants are humanoid-like tree creatures from the Dungeons &amp; Dragons game.
 * In Season 4, the Amazon Fairies used their magic to turn trees of the Amazonian Rainforest into humanoid creatures that look almost similar to the Treants.
 * It is unknown if their eyes are normally red or if they are that way because Selina corrupted them to become evil via the Legendarium.
 * The background of the ancient knights and their reason for transforming into trees are still unknown.