Ashley met with him to buy some new weaponry; he wanted to convince her to work together more closely when they were suddenly attacked by John Druitt, who quickly incapacitated Ernie by hitting his chest with a morning star. After Druitt left with Ashley, Ernie recovered and informed Ashley's mother.
Years later, Ernie delivered a lepidoptera to the Sanctuary team. However, due to his use of a refrigerator instead of a proper cryochamber, the creature hatched prematurely, causing the Sanctuary quite a bit of trouble. In the end, Ernie was willing to help them -- for the right price.
However, in 2010 it was announced that the character had been "reinvented" to appear in the third season episode "Wingman".