Bash is a mutant with the abilities of super strength and superhuman (above average) durability and stamina. He and his friend/cousin Cooter run in to Excalibur, and with Meggan and Captain Britain get in to a fight at a pub. He is a delta-level mutant.
His real name was revealed in Marvel Atlas #1.
Statistics:
Hair: Black
Eyes: Brown
Citizenship: Britain
Known Relatives: Cooter (cousin)
Identity: Secret