returns at the end of the summer. Iapetus Iapetus, also known as Bob the Titan, is the Lord of the West and the father of Atlas. Bob first appears as one of the main antagonists of the short story Percy Jackson and the Sword of Hades which appears in The Demigod Diaries as well as the back of the paperback edition of The House of Hades. He subsequently appears as a main character and a supporting protagonist in The House of Hades. In Percy Jackson and the Sword of Hades, demigod Ethan Nakamura uses the sword of Hades to release Iapetus from where he has been locked in Tartarus for millennia. Iapetus battles Percy Jackson, Annabeth Chase, Nico, and Thalia Grace, proving to be more than a match for them. In desperation, Percy throws Iapetus into the River Lethe which erases the Titan's memories, leaving him with a childlike personality. Percy convinces the amnesic Iapetus that he's actually their friend Bob and Bob heals Percy's injuries from the fight and aids him in confronting Persephone over her secret creation of the sword in the first place. Bob is subsequently employed as a janitor in the Underworld by Hades. In The House of Hades, while trapped in Tartarus, Percy and Annabeth briefly reminisce about Bob, inadvertently summoning him to their aid when the Titan overhears them. Percy is left feeling guilty after learning how Hades and Persephone used Bob as a servant while Nico would visit and tell the Titan about how good of a friend Percy is. Bob acts as a guide and protector to Percy and Annabeth, his knowledge of Tartarus from his time trapped there proving vital in their quest to reach the Doors of Death and escape. However, the regenerative effects of Tartarus on monsters starts to heal Bob's mind and slowly restore his memories, including the fact that Percy was the one who erased them in the first place. On one occasion, the group faces monsters who cast curses upon them that their previous enemies have left. Bob hesitates to help until Percy apologizes for his actions and for being a bad friend. Bob also befriends Small Bob, a sabertooth cat inadvertently created and then destroyed by Atlas in The Titan's Curse. Bob leads Percy and Annabeth to the friendly giant Damasen who heals the two demigods injuries, but is convinced that he can't change his