Michael's father was a high school linebacker in Hilo, Hawaii when Venus was attracted to him. At some point, he came to the continental United States and made his way to the Wolf House. After being trained by Lupa, he made his way to Camp Jupiter and became a probatio in the First Cohort. He eventually became one of the cohort's centurions alongside Octavian.
Michael was in a dream talking to Octavian about his decision to reinstate Bryce Lawrence.
Michael appears in a speedboat with Leila and Dakota to arrest Reyna and Nico. After a brief fight with Coach Hedge, he was knocked out by Tyson as he and Ella came to help Nico and Coach Hedge. Nico di Angelo, Dakota and Leila drag him to shore and leave him by the docks.
After the son of Venus wakes up he makes his way to Octavian and stands guard over his co centurion before the onager went off and sent the legacy of Apollo to his death.
The son of Venus is mentioned to have been selected to lead a boarding party onto the Julia Drusilla Yachts and a few days later sets out to perform the task. His team fails but their task is successfully completed when Lavinia Asimov and a group of nature spirits destroy the enemy fleet.
Mike is extremely loyal to the Twelfth Legion Fulminata. He obeys his superiors no matter who they are. Despite his loyalty to Octavian, he is shown to doubt his plans and Reyna believes his heart is in the right place even if he makes poor decisions. Towards the end, his loyalty falters and he later purposefully lets Octavian kill himself to end his madness, showing his loyalty lays with the legion itself and not its commanders.
Mike is described with dark hair and eyes, a tan skin and muscular arms. His tattoo is a dove, one of Venus' sacred animals.
- ADHD: Like most demigods, he possesses inborn supernatural battle reflexes and senses that he uses to analyze the fighting style of his opponent.
- Combat Prowess: He is trained in Roman legionary warfare.
- Dyslexia: His brain is hardwired for Latin.
- Great strength: Michael is really strong. Reyna claims that he can crush a rock with his bare hands. During his skirmish with Nico and Coach Hedge, Michael is able to snap Hedge's wooden baseball bat in half. In fact, Reyna claims that a Laistrygonian or a Cyclops would be needed to take Michael down.
- Amokinesis: As a son of Venus, Michael has some control over many degrees of control over love, lust, beauty, etc. though on a much smaller scale than his mother.
- He can attract a person of any gender when they walk by.
- He may have the ability to change his physical features, as Venus is the goddess of love and beauty.
- Beauty: He is able to radiate beauty, regardless of how he may look. This ability sometimes prevents enemy forces from willingly attacking him, even as he charges them head-on.
- French: As a child of Venus, he is presumed to be able to speak French fluently due to it being the "language of love."
- Michael is derived from the Hebrew given name Mik’ā’ēl meaning “Who is like God?”
- Kahale is Hawaiian for house.
- Being born in Hawaii, Mike is the only known American demigod who was born outside of the god's current realm of power.
- Early on in The Blood of Olympus, he went by Mike, but later on in the book he goes by Michael.
- Mike is the one who killed Octavian, albeit indirectly by preventing Nico di Angelo and Will Solace from stopping him from launching himself with the Onager.
- Michael is the first and so far only demigod, as well as character, in both the Riordanverse and Rick Riordan Presents to be of Pacific Islander descent.