Manheim was a portly man who fashioned a "hip hop" style of dressing preference. He had short hair, a vertical line-goatee, and downward-angled eyebrows. Manheim wore a long-sleeved shirt that would be covered by a large T-shirt, a pair of baggy trousers, as well as a snapback hat which he wore in a reverse fashion.
Manheim displayed a laid back attitude, in stark contrast to Asta's hot-tempered personality.
Manheim and his other teammates were fairly advanced in the game, as they collected 71 specified slot cards by the time they decided to cooperate with Gon and Killua.
Greed Island arc
Manheim, a member of Team Asta attends a meeting of 15 players formed by Kazsule in order to stop the Bombers from finishing the game. As the meeting escalates Manheim's leader Asta gets into a heated argument with a member of Gon's team, Killua. Manheim and his team member Amana stop the argument by offering two S-Rank cards in exchange for information on the Bomber's abilities. When it's decided the newly formed alliance would hunt the "Plot of Beach", an "Accompany" is used to transport them to Soufrabi the location of the card.
Arriving at Soufrabi, Kazsule instructs how to acquire an SS-Rank card and the alliance members split up into small teams to go around the town to acquire information on the "Plot of Beach" card. It's found out by a woman NPC that Razor and his Fourteen Devils, a group of pirates who rule over the city. The woman NPC promises to tell where the card is if they drive the pirates out of the town. The alliance members are then lead to the pirates' base in the town and are challenged by the pirate Bopobo to a sumo wrestling match and Killua manages to beat him. So the group is lead to Razor's lighthouse base, where they are challenged by the pirates in a series of 8 trials, but they fail them all. Seeing that there's no possible way for the Bombers to collect the "Plot of Beach" card, Team Asta leave the alliance.
Manheim's name is mentioned in Gon's binder. After Gon and his group successfully defeated Razor and collects the rare card, they were contacted by Genthru and mentions that Manheim and the rest of the group who first join Gon, Killua, Biscuit, and Goreinu in an attempt to collect the rare card "Plot of Beach" were murdered by the Bombers.