Mike O.
- Primary work
- Steel Ball Run
- Stand
- Tubular Bells↗
Mike O. (マイク・O, Maiku Ō) is a secondary antagonist featured in the seventh part of the JoJo's Bizarre Adventure series, Steel Ball Run, specifically in the " Tubular Bells " story arc.
He is President Funny Valentine 's personal bodyguard. When Lucy Steel and Hot Pants infiltrate the President's residence in Chicago, he battles Hot Pants in order to protect Valentine. Mike O. is a Stand user and creates deadly metal balloons through his Tubular Bells.

Image attribution details
Mike O.. Source illustration via JoJoWiki; copyright remains with the original rights holders.
Image via JoJoWiki. Original franchise/production rights holders retain copyright; the wiki text CC BY-SA license does not license this image.
Original image ↗ · Archived image ↗01Basic information
02Appearance
Mike O. is a dark-skinned man of average to above-average height and medium build. His head is shaved save for a dark, curly patch on his crown; and centered on the edges of both eyes, extending to mid-forehead and covering his cheekbones, he has two light, swerving tattoos tapering at both ends into a spiral.↗↗
He wears a heavy overcoat of a thick collar and a sort of thick braid lining the length of his torso; a neatly folded scarf, and pants covered regularly by short spikes.↗
03Personality
Mike O. is a farily serious servant loyal to Funny Valentine.↗
As a bodyguard, Mike O is dedicated to his job. After an infiltrator intercepted Ringo Roadagain 's message in a presidential building, Mike O. leads an exhaustive investigation of the staff and their relatives, making over 1000 detailed files of all personnel. He takes his duty as a symbol of honor and considers any breach of a presidential building a stain on his honor as the president's bodyguard. Mike O. On the other hand, Mike O is ruthless toward those that threaten the President.↗↗↗↗
His conduct of his investigation and his dedication to his position as a bodyguard for the president make him both very thorough and patient, going to painstaking lengths to achieve his goals, going as far as to willingly rupture his lungs and throat in a last attack against Hot Pants with Tubular Bells.↗↗
04Abilities
Stand
Mike O.'s Stand is Tubular Bells, which allows him to inflate metal akin to balloons and reshape it into living animals (dogs, swans, etc.). The balloon animals track and/or invade the body of a target, exploding and reverting suddenly to their metallic form.↗
05Story
SPOILERS
Steel Ball Run
Mike O. is first seen as he confronts Diego Brando in the outskirts of Chicago. Making small talk, he shifts the focus to the acquisition of the Saint's Corpse 's ears and left arm. Mike O. demands the identity of the traitor from Diego' intel about traitor gathered from their horse's hoof-prints. Resigned, Diego reveals that the traitor is likely a woman weighing less than 51 kg (112 lb). Mike O.↗
Mike O. reports the gathered information to Valentine in his Chicago residence. Valentine has doubts about the traitor's likelihood of being a woman as none had clearance to the building in Kansas City. Mike O. suggests the infiltrator may be a Stand user, but Valentine denies it because of their connection to Mountain Tim. Having created a list of potential suspects beforehand, Mike O. reveals the list of profiles before calculating the number of possible suspects to 147 likely candidates.↗
Mike O.'s balloon dogs stay in Valentine's vicinity as he naps during Lucy Steel 's infiltration. Although disguised as Scarlet, the dogs recognize Lucy's smell and bark at her. While Valentine sleeps, Lucy tries to steal the corpse parts before she is confronted by Scarlet. Sensing one of the dogs have popped, he goes to the building before hearing gunshots. Sensing his dogs nearby, he investigates and looks inside of a bathroom adjacent to the bedroom.↗
Mike O. becomes furious due to his honor as the President's head guard being soiled by Hot Pants and plans to capture her to be tortured and made an example to her country. Hot Pants tells Lucy to stay still, alerting Mike O. about her nearby presence. With another shutter, Mike O. cuts off Hot Pant's other arm, incapacitating her. He destroys a stall with two more, uncovering Lucy and the dead body of Scarlet Valentine. Furious, Mike O.↗
06Plot details
SPOILERS
Personality
takes any threat to the President's safety with upmost priority, displaying distress after discovering that the First Lady Scarlet Valentine died and searching for the perpetrator after hearing gunshots.↗↗↗↗
Appearances
Steel Ball Run Chapter 50: Tubular Bells, Part 3 (Death)↗
Profile details
Status Status based on their final appearance in the part(s) they are featured in: Deceased (Part 7)↗
Date of Death: November 1890↗↗
Cause of Death: Ruptured lungs and exploded throat via Cream Starter↗
07Appearances
08Sources & attribution
- Mike O.
Source bibliography (6)
- Calculated based on dates given in Steel Ball Run Chapter 56: Civil War, Part 1 and Steel Ball Run Chapter 60: Both Sides Now, Part 1 Open ↗
- JOJOVELLER: Araki's Stand Commentaries - Tubular Bells Open ↗
- Steel Ball Run Chapter 50: Tubular Bells, Part 3, p.42 Open ↗
- Steel Ball Run Chapter 50: Tubular Bells, Part 3, p.48-49 Open ↗
- Steel Ball Run Chapter 48: Tubular Bells, Part 1, p.46 Open ↗
- Steel Ball Run Chapter 50: Tubular Bells, Part 3, p.53 Open ↗
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