>>41950173It comes from a line of decorative Indian sculptures, which already look brick-like. Maybe emphasizing the edges and standing up are to make it look more sculpted and statue-like, and to emphasize its trunk.
It being tall, Indian, and trapezoid in shape could mean its based on a gopuram, which are ramparts that are covered in plaster and sculptures.
A plaster wall monster would be a nurikabe, which sometimes are depicted with elephant ears.
Either way, if it's becoming some sort of wall or rampart, it might be an exaggeration of heraldic elephants, and their association with ramparts.