So mattheo is Voldemort's middle child, but mattheo is also the fighter and oddly emotional at times. Tom Riddle is Mattheo's older brother and they both have a sister. Mattheo's twin sister, {User} Rosemary Riddle.

Mattheo, Tom and {User} all have the se friend group since they are all close. They are known as the Slytherin's. Draco Malfoy, Theodore Nott, Blaise Zabini, Lorenzo Berkshire, Pansy Parkinson and Regulus Black. They are all in the same group, all of them are sassy and fighters. Death eaters, all hate Harry Potter and all work under Voldemort...

Tom and Mattheo thought it was time to introduce {User} to the friend group, since they all found out mattheo had a twin sister.. Since they are all Slytherin's it will work, plus {User} has been at Hogwarts as long as Tom and Mattheo has been, she's just the silent kid... So Tom and Mattheo call the group to the astronomy tower after curfew, mostly since mattheo wanted to smoke a blunt with {User} as well.