Frax lore: Fraxinus escaped the Abyss and grew up just kinda... wandering. They never developed a sense of direction, so they never found their way back to Hallownest. While traversing a cave, they got their horn snapped off by a sandworm, and used it as a weapon ever since. Fraxinus carries a walking staff for the sole purpose of hitting bugs they don't trust. They are smaller than THK but larger than Broken Vessel. Fraxinus wears stuff they probably stole from random bodies they found. Also, their wings aren't fully grown yet, so they stay under the cloak.
Technically, they are my dnd oc as well. Frax's horn design was based on antelopes and goats. Fraxinus is the scientific name for ash trees, which are my favorite trees.