Barry is running, circling this strange foe. He knows not her powers, but he finds her smile and cheery demeanor during battle to be off-putting.
Suddenly, he feels a tickle in his armpit. Another tickle on his stomach. There's a scurrying within his costume.
He feels a sudden weight on his head. His mask stretches out, and exposes a squirrel staring Barry in the face. Another pops up in his vision, and another. Soon, Barry's suit is filled with squirrels. There are more fluffy tails than man within the speedster's costume.
Barry struggles to move under the weight of the fuzzy monsters. His throat clogs as he inhales the squirrel's hair. He can't move, can't see, can't breathe through the mass of varmints that have fully enveloped him.
His world turns black. The last thing he hears is the woman giggling. She mocks his demise, saying in a sing-song voice "I'm the unbeatable Squirrel Girl."