Rebels from Olympus by Sandy Milczarek

Identity can be a killer, especially to fifteen year-old Justus Appleyard. No one seems to be who they really are – even Justus himself. A typical teenager at war with everything, normal will never be the same for Justus after three unusual people move into the abandoned house next door and barge into his life. Enter an obese giantess named June with an obsession for mall food and her so-called son, Apollo, and daughter, Diana. Once their divinity is revealed as rebellious gods on the lam from Mount Olympus, the adventure ramps up as an egg-shaped lake and an ancient Native American serpent mound must be saved from destruction. An eccentric mother, an absent father, an oddball thirteen year-old sister, Rosa, with an uncanny ability to design and make clothing, and Justus' love interest, Madeline, join him on his divine escapades. Secret identities are revealed, new connections made, and Justus finds the strength and talents within himself to juggle every conflict thrown his way as he faces an evil darker than the death of the body – the death of self.