Ace

Ace is the Amalgam version of DC’s Ace Morgan and Marvel’s Invisible Woman. 
 
Ace is a fearless agent of SHIELD. She participated in a experimental test flight with Reed ‘Prof’ Richards. The craft was sabotaged and crashed to Earth. Having all survived, the banned together as the Challengers of the Fantastic. She is equipped with many weapons and a force field generator.
 
Like the Marvel version, Ace is torn between wanting Prof or Mariner as a companion.