Adeline

Adeline Haynes is a character in Hollpiglet's series Monsters. (Of course, you already knew this since this is the only subject at hand)

Character
Adeline is one of the vampire protagonists along with Clara and Victoria. She is generally quiet and can be very suspicious of others throughout the series. However, she has a very strong bond with Clara and Victoria, as shown in Victoria's Backstory, let herself be bitten by an already turned Victoria in order to keep her company and not leave her alone.

Before Monsters
Adeline was one of Victoria's best friends along with Clara. Explained in Victoria's Backstory, Adeline was met by a guilt-stricken Victoria, who had murdered the young daughter of the principal, Franny. Both she and Clara, resolving not to leave their friend alone forever, voluntarily let Victoria bite them, turning into vampires in the process.

Trivia

 * In Episodes 1 and 5, she is shown to have the "serious" eyes on the roblox facial expressions and in the MONSTERS Map game. but however throughtout the series, her eyes were always shown to be fully awake
 * She and Clara both have maroon on their tops while Victoria doesn't
 * She's the only member of The Girls who never said the word "Hell" at all
 * She is the only member of the vampire girls that never goes on her own, since Clara goes alone to find Orenda and Victoria going alone on few situtions