Arthricia first appeared in the episode Look Who's Purging Now, where she was one of the people on the Purge Planet. She was seen getting cornered and about to get killed during the purge until Morty spotted her. He convinced Rick to fly down there and save her. So he did. When they saved her, Arthricia explained that she disagreed with the politics of the purge and always wanted to put an end to it. She then lied to Rick and Morty, saying that her nana was left on the planet and they needed to save her. They went back down into a shed and Arthricia stole Rick's laser gun and shot him in the liver and took off in his ship without him, leaving Rick and Morty to fend for themselves.