There are multiple artists named Monster
1) A Vietnamese boy group
2) A UK based Dubstep producer
1) MONSTAR is a Vietnamese boy group that debuted in 2016 under ST.319 Entertainment. The group currently consists of 5 members: Nicky, Key, Grey-D, J, and Zino.
2) Monstar, real name Adam Tindill, is electronic music producer from Newcastle, UK, who also goes under the alias Original Sin for drum & bass productions. This alias was active between 2010 and 2012 and his most popular track "Put Ya Hands Up" feat. Read more on Last.fm