Spider-Man: No Way Home Trailer Dropped - The Loop
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In "Dream a Lily Dream", it is revealed that Lily was afraid of him, Flip, and the tentacle monster up until the events of the episode, and would have nightmares about them. It ended when Leni, Lynn, Lincoln, Lola, Lisa, and Lily made an invention and went inside Lily's dreams and fought him in the dream.
Trashy is a big, sentient monster composed entirely of all the accumulated garbage of the Loud family. He is dark green with yellow eyes and black pupils, and has a big mouth. He has two arms but no legs, and attached to his body he has some of Lily's feeding bottles, and a flower pot.
Before becoming bigger and stronger, Trashy was smaller, with prominent buck teeth.