Segiri

No. 7, named Segiri by Sena is a Hero in Xenoblade Chronicles 3. She is the commander of the mysterious Colony 0 and pilots a mech called a Feron.

Story arc
No. 7 and several Ferons attacks the party on multiple occasions. She was properly introduced at Capticorn Peak where Sena damages her Feron, knocking her unconscious.

Trivia

 * According to concept art, Segiri's term mark is on her right forehead.