Tramalica was Tim's alien friend in "Aliens"
She is the alien version of Tim's love interest, Rita, as she has the same hair clip, hairstyle, and glasses as her. The only differences are that her skin and hair are green, and her hair is in a top-knot style. When Tim gets into an argument with Moby, Moby angrily dresses up into her likeness, which prompts Tim to mention deja vu. She is also briefly mentioned by Tim in Inca Civilization. Moby is seen bringing a llama into Tim's room while he is sleeping and the llama licks his nose, causing him to sleeptalk about Tramalica's people.
Moby's dress-up as Tramalica
Tramalica's appearance
"What? I wasn't dreaming." - Tim (after awaken from his dream on the couch)