Xilo

Xilo is the 2nd half of MaXi. He forms the left side of the twins and when he merges with Mara his right arm and leg disappear.

http://www.mediatoon-distribution.com/en/catalog/267/maxi/ video calls him "the cheeky one”.

Age
Xilo is the older brother, Mara admits "you just managed to get your hand out before mine".