Belemuel is a most mysterious warrior who suddenly appeared in the ruins of the Janam Desert. Keflen was attempting to summon him before his world was lost to the One King but was unable to make it in time.
Eventually, Keflen would ask the Company's aid in summoning Belemuel, although due to the world fusion, Keflen was unsure as to why he was compelled to do so.
In the depths of the ruins, Belemuel appeared, thanks in part to the Chronicle of Boundless Amber. Belemuel is a warrior whose mission is to simply fight against the One King. Keflen called him "the spirit of the bearer of the Tensyo Star" but was unable to articulate what that meant. Belemuel was a highly reticent being, never speaking a word.
Following the war, he seemed to be searching for Enumclaw, but exactly why, or what connection the two may have, is unknown.