Till The End (Age of Ultron)

A girl named Silver.Last name was Clear.Her brother was Daniel Clear he had the ability to teleport.

'I'm overlooked a lot'

Had caught the eyes of a team of superheroes.
She had the abilities of invisibility,Phasing through walls,very flexible,Tekeniesis,controlling weather and Fear manipulation.

'I choose my own side to fight on'

Daniel was trained in combat and so was Silver at a young age by their father.Their mother had left the 3 when she found out Silver's Abilities and Daniel.

'You chose the wrong side'

(I own Daniel,Silver and their father not the AVENEGRS or Marvel)