In 1946, he was returning home from fishing at Cut Bank Creek when he took a shortcut behind Watkins house. He heard a strange groan and looked into the house, where he saw Watkins transforming into a manitou. After Watkins saw him, Ish ran home.
In 1994, he encountered Fox Mulder and Dana Scully in a diner on the reservation. He told them to leave as he felt they didn't belong among the Tregoes. He also told them Parker had killed what they were looking for.
Ish believed Mulder to be more open to Native American beliefs than some of his own people, namely Sheriff Charles Tskany. He later told Mulder and Tskany of his encounter with the manitou five decades earlier. He also told them that the manitou rose again and that it could be passed along blood lines.