Mumbo is a lead guitarist and lead singer of his band .... His other band mates are pearl false tango and etho False: not really background singer but mumbo is the like lead singer yk Pearl: drummer Etho: guitarist Tango: bassist They are a pretty small underground group but they have a pretty consistent fan base Grian and scar were best Friends since middle school which shows a lot since they are now in their late twenties they grew up together and bond so well even though their tastes are different their personalities though mix very well which is shown in their long lasting friendship