outcasts... (Allen santos x reader)

Allen is Jimmy and Rachelle(My Y/N)'s son, he's the eldest brother of his 4 younger siblings, zhion, Victor and kayla (and an unknown character now but you'll get to now later), {reader} then meets his youngest sister in the science lab working on some project, but when she met {reader} she apparently used {reader} as a daily test subject for her inventions and what not