Apollo Genesis (アポロ・ジェネシス, Aporo Jeneshisu), is the heir to a successful American business company, and is traveling the world before being instated as the head of the company. He meets his Mamodo Rops (ロップス, Roppusu) on the way and they begin traveling together and defeating Mamodos when challenged. When traveling to Japan, the pair battle and befriend Zatch Bell and Kiyo Takamine before leaving. Apollo after some time decide to meet up with Kiyo to tell him what happen in one of his travels. In Holland, they encounter Zeno Bell and Dufort and are defeated with Rops' book being burned. After the pair's defeat, Apollo returns home to run the company and uses its resources to assist Kiyo and his friends whenever possible.
Rops' spells were based on the manipulation of ropes and chains.
Description:Fires ropes with hooks on them to throw the enemy. (Video Game-only)
Apollo's apparent talent to master musical instrument, his ability to predict attacks, and the sun on his suit and tie when he meets Kiyo later are all most likely references to the Greek god Apollo who is the god of music, medicine, prophecy and the sun.
He revealed to Kiyo that though they (he and Rops) fought many mamodos, they never really burned any book, they just keep winning battles and move on.