SIS vs BRO

Karina Kurzawa (born March 27, 2007) and Ronald Kurzawa (born September 3, 2008), better known online as SIS vs BRO, GamerGirl and RonaldOMG, are two Canadian siblings that run three channel on YouTube. Their main channel titled SIS vs BRO is where they often collaborate with other in uploading DIY (do-it-yourself) videos similar to Collins Key. They also upload skits on their channel such as their everyday life.

They also have gaming channels under the names GamerGirl and RonaldOMG, respectively. Both channels were made before creating their most subscribed YouTube channel which currently has over 8.1 million subscribers and 1.9 billion video views as of January 2019.