Officially a bad ass
After reading Ultimate F4#23 Invisble Woman is offically a bad ass.
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Spoiler
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She not only killed an evil Reed Richards by popping half of his brain, but she blinded an army of zombied out heroes and villains that included the Avengers, X-Men, Inhumans, Alphaflight, and a bunch of randoms like Nova, Jugs, Elektra, and Ghost Rider, by turning their optic nerves invible. Thing also appeared to kill a zombied out Hulk with one punch in this issue.