<Li> Taylor Dooley as Lavagirl . The role was cast after the two other main characters , Sharkboy and Max , had already been cast . Her lava bike was computer - generated , like many of the elements in the film ; Dooley and Lautner described the on - set versions of the lava bike and Sharkboy 's shark - themed jetski as `` a green box with handles '' . </Li>
<Li> Taylor Dooley as Lavagirl . The role was cast after the two other main characters , Sharkboy and Max , had already been cast . Her lava bike was computer - generated , like many of the elements in the film ; Dooley and Lautner described the on - set versions of the lava bike and Sharkboy 's shark - themed jetski as `` a green box with handles '' . </Li>
lava girl from shark boy and lava girl
lava girl from shark boy and lava girl
Taylor Dooley
Taylor Dooley