In "It's a Monster", Needle has Yellow Face apologize for killing her and thanks him when he does so.
In "The Long-lost Yoyle City", Needle is the first to notice Yellow Face stuck in the glue. She later recovers him and Yellow Face screams "Yay".
In "Well Rested", Needle takes Yellow Face's entire headphone stock (which consists of 2 headphones), while saying "It's perfect actually". Later in the episode, Yellow Face asks if Needle needed to kill someone right away, and Needle replies with a yes. Yellow Face then gets excited because she was his first customer and gives her a "katana". She is also the one who gives the idea to Yellow Face to tell FreeSmart a spooky story.
In "No More Snow!", when everyone is balancing on her in the Evil Canyon, Yellow Face asks her if she can stay up much longer. Needle says no.
In "Meaty", Needle is worried about their team's paint color being purple as Yellow Face hates the color.
Episodes suggesting a conflict[]
In "No More Snow!", Needle slaps him out of the Evil Canyon when he calls hers "Needy". She is later burnt alive by Yellow Face.
In "Intruder Alert", when Needle doesn't like drinking the rainwater in the warehouse, Yellow Face tries getting her to buy his powder package. Needle declines all of Yellow Face's offers until it gets to a 200% discount. Needle later asks Yellow Face where Bomby is, angrily calling him a murderer after she finds out the powder package was Bomby's gunpowder.
In "Catch These Hands", Both Nickel and Needle are mad at Yellow Face for not giving them win tokens.
In "Balancing P.A.C.T.", Yellow Face comes in defense of Just Not when they're chased by Needle. They both fight and Yellow Face bites Needle's arm, making her fall.