Maroro tend to be cowardly, especially when faced against opponents or monsters who were much stronger than himself or were scary in appearance. Despite this, he was willing to protect his friends when they were trouble as best as he can, especially Haku whom he considered his best friend.
Seemingly comical and frail, Maroro was the resident scribe, scholar and magician of Ukon's entourage. His peculiar magic required a lengthy chant with matching dance, but had quite a wide area of effect. His magic seemed to be centered around fire magic.
Haku came to his aid when the giant Gigiri (Boro-Gigiri) attacked and decimated the entourage, dragging him along the ground towards the fleeing group. Maroro began to stick to Haku and considered him to be his benefactor, always wanting to help him out in return, and explicitly said that he's Haku's best buddy though the latter did not consent to it. Maroro would occasionally get into a comical rivalry with Rulutieh's giant pet bird, since the bird really cuddles to Haku, and Maroro sees this as "stealing" his best buddy.
In Futari no Hakuroro, he was brainwashed by Raikou to become a pawn in his grand scheme of things. Implanted with a parasite that both boosted his overall magic capabilities and giving him a false memory of Oshutoru killing Haku out of personal greed, he became a constant menace for Oshutoru(Haku) as his vast knowledge became a powerful weapon when coupled with his magic. Many a time did he managed to push Oshutoru(Haku) till his back was to the wall before the pre-planned strategy actually came through.
Haku - He had always considered Haku to be a friend that he was unworthy of having but was more than happy to try and be closer to him. When told of Haku's apparent death after witnessing a full blown massacre of the army commanded by Dekoponpo in Futari no Hakuoro, he was so heartbroken that he barely had any will to continue to live on. However, this proved to be an exploitable weakness for Raikou as he was later captured and brainwashed by implanting a parasite in his head to later become a continuous menace for Oshutoru(Haku) until he died saving his best friend.
Dekoponpo - He never really liked this Eight Pillar General for his recklessness and unwillingness to listen to any advice. Due to be contracted to his service for the greater good of his family, he had no choice but to obey him on his whims.
- He was the fifth person in Futari no Hakuoro to figure out Haku's been impersonating Oshutoru, as Haku told him right before his death.