Tenris was an isolationist, who started the idea of not mixing the Land with the Sea. This allowed him to exercise total domination over the Seal Clan, and to have much influence over the other Sea Clans. He was very persuasive, and his voice was described as "beautiful" on multiple occasions, and is low pitched, with an undercurrent of power in it. He seemed to be caring and kind, however, this seems to be a facade, as he is shown to want only power at the end of Spirit Walker.