Atlas

The smallest of all of his brothers, Atlas wants to be just like Axel because Axel is the biggest. Also because their coloring is similar. And because Axel is cool. Atlas doesn't totally get Axel's motivation to become an evil villain, but it's nice that his big brother has ambition and sets goals for himself. Atlas will do anything Axel asks of him, even demeaning tasks like crawling around in the dirt and mud to find rare (or nonexistent) bugs or plants or mythical stones for Axel's potions.

Atlas collects Axel's discarded "failure" sculptures, because otherwise Axel won't let him have any of them. Atlas tries to make sculptures of his own, but they're even worse than Axel's failures. Atlas has a different affinity for elemental magic. He can make plants grow, which automatically makes him Leaf's favorite fae in the entire lair. This is also the only thing that Axel seems to appreciate about Atlas, because Atlas can duplicate hard-to-find plants. This is also something that endears Aster to Atlas.