According to 'Onisaburo DEGUCHI' from 'Omoto' to which Tenmei also belonged when he was young, the appearance was a glittering old spirit with thoughtful twinkling eyes and white hair, belting 'the sacred Yatsuka sword' on. ("the Cauldron of Hell of the volume 3 of Great Mother" written by Yasuaki DEGUCHI)
天明自身も若い頃に所属していた「大本」の「出口王仁三郎」によると、その姿は光明に輝き、深いまなじりに光をたたえた、「八握の神剣」を腰に帯した白髪の老神だったという。（出口和明『大地の母3巻　地獄の釜』）。