His origin and lineage are uncertain; he might have been a member of the ruling Tiberian-Julian dynasty or alternatively perhaps a foreign usurper.

Inintimeus's reign was marked by large-scale construction projects for defensive structures throughout the kingdom.

Ininthimeus became king of the Bosporan Kingdom in 234, succeeding Cotys III and Rhescuporis IV.

[7] If he was a Tiberian-Julian dynast, it is possible that he was a younger son of Cotys III and a brother of Rhescuporis IV.

[9] To combat threats from migrating tribes, Ininthimeus is known to have constructed new fortifications throughout the kingdom, including further developing the fortress of Iluraton in Panticapaeum.