(I don't own these pictures. All Rights go to the owners.)

Name: Brianna Tennyson

Gender: Female

Age: Same age as Ben

Species: Half Human and Anodite

Crush: Kevin Levin (Boyfriend)

Friends: Ben 10 Omniverse Allies

Enemies: Ben 10 Omniverse Enemies

Family: Carl Tennyson and Sandra Tennyson (Parents), Ben Tennyson (Older Twin Brother), Gwen Tennyson, Ken Tennyson, Sunny, Joel Tennyson, Lucy Mann, Clyde Fife and Camille Mann (Cousins), Max Tennyson and Verdona (Grandparents), Frank Tennyson and Gordon Tennyson (Uncles), Natalie Tennyson and Betty Jean Tennyson (Aunts)

Others: Second Wielder of the Omnitrix.

Sounds like Sofia Carson