Sonic Syndicate was a Swedish metalcore band from Falkenberg. They were originally influenced by Swedish melodic death metal bands such as In Flames and Soilwork, as well as American metalcore bands like Killswitch Engage and All That Remains. The band was founded in 2002 by brothers and songwriters Richard and Roger Sjunnesson (death growl vocals and guitars respectively), with their younger cousin Robin Sjunnesson (guitars) under the name Fallen Angels. They switched to Sonic Syndicate in 2005.
https://en.wikipedia.org/wiki/Sonic_Syndicate