Squirrel Girl was the sidekick of Dark Owl.
History[]
In order to evade NSA Agents West and Rush, Zeta and Ro fled into a Picto-convention. They holomorphed into Dark Owl and Squirrel Girl, but the disguise quickly fell through.
Bucky later commented that Ro looked good as Squirrel Girl.
Background information[]
Squirrel Girl is based on the concept of Robin and Sparrow. To date, the only character named Squirrel Girl was a plucky comic relief hero from Marvel named Doreen Green.