My OC Phobia. She's a spider with a body (cephalothorax and abdomen) the size of an American football (her legs technically make her bigger). Having no eyes, she uses her 2 pairs of antennas (the black tendrils on her body, two going forward and two longer ones going behind her) to sense the world around her. The antennas are how she smells the world around her, but also give her the ability to sense supernatural and paranormal entities. She also produces her silk much faster than normal spiders.
In lore, she lives in a bleak port city known as Greyport. Supernatural and paranormal entities inhabit the forest near the city and Phobia has the power to sense them, so she does what she can to fend them off from attacking the townsfolk. Her contributions go unnoticed, of course. To most everyone she's just a spider the size of someone's face and deserving of fear, hence the name "Phobia".

Artwork by Vertigo, check her out here:
FA -  vertigoxxxx