Someone who is chillos keeps his cool in sticky situations.
Alternatively Chillos is the nickname of a highly skilled Dutch gamer.

Someone who you call chillo is your buddy. Chillo means pal, child, kid, friend, budd.

A chill Dutch guy, very good looking and a great friend.

If you ever get the chance to meet a Chillo consider yourself lucky.

Chillo is also a highly talented Dutch gamer, and guitarist.