Ellie Rose is the deuteragonist of the Henry Stickmin series, first introduced in the 5th Henry Stickmin game, Fleeing the Complex. Depending on the endings, she can be one of Henry's best friends, his worst enemy, or simply does not know who Henry is at all. Ellie is a simplistic stick figure like everyone else in the series, with a round head, thin black body, and white hands, her shoes are a lighter color than Henry's. Her defining character trait is her distinct red hair, being one of the few Henry Stickmin characters to actually have any. In Vs Impostor, she drops in from Charles' helicopter to join Henry in the song Reinforcements.

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