According to myth, he was “the greatest hero and slayer of monsters, alongside Cadmus and Perseus, before the days of Heracles” . Bellerophon is a demigod hero from Greek mythology, the son of Poseidon
His power or equipment (unique) can be Pegasus, an untamed winged horse or the one he killed Chimeria , usually depicted as a lion, with the head of a goat arising from its back, and a tail that might end with a snake’s head, and was one of the offspring of Typhonand Echidna and a sibling of such monsters as Cerberus and the Lernaean Hydra.
You can also get some idea from this: ‘Bellerophon_ vanquished by dropping boulders from his winged horse; when he was sent against a Carian pirate, Cheirmarrhus, an ambush failed, when Bellerophon killed all sent to assassinate him; the palace guards were sent against him, but Bellerophon called upon Poseidon, who flooded the plain of ** Xanthus __ behind Bellerophon as he approached**. In defense the palace women sent him and the flood in retreat by rushing from the gates with their robes lifted high, offering themselves, to which the modest hero replied by withdrawing’_ — where Bellerophon can be a hero with Poseidon’s assisting water power! Or fight alongside with Pegasus like Artemis with stag!
He must have a spear tipped with a block of lead.