Melissa speaks with a lisp, making some of her words difficult to understand. She is also shown to be very girly and a complete airhead. Before they arrive at Brad's house and after telling Finn they were already at their destination, she turned around and said "Hi, Finn!" while blushing and waving revealing she may have a crush on him. When Finn reminded her that she was supposed to drive them to Makeout Point, she replied dimwittedly "You think I want to make out with you!? Well, maybe I do..." which is another supporting fact that she may have a crush on Finn, but it is still unknown.
You think I want to make out with you!? Well, maybe I do... I HAVE A BOYFRIEND FINN!
Melissa's contact on LSP's phone is "BFF 66."
Her license plate reads "SXY-LMP," meaning "Sexy Lump."
Though Melissa doesn't physically appear in "Heat Signature," she does have a phone conversation with LSP. LSP also appears to speak to her in the "Let's Work Together" short.
Melissa is dating LSP's ex-boyfriend Brad, and seems to tease her about it.
Apart from her eyelashes, Melissa's eyes are exactly like Cake's.
An anecdote about Melissa appears in LSP's book ("I Wrote a Book!") in "Gotcha!". A brief image of a page from the book reveals that Melissa once came out of the bathroom with her lump crooked, but LSP was "PO'ed" at her and refused to tell her.