Grimsby is British gentleman standing 5' 7", topping the scales at a stocky 170 lbs. His dark brown hair is conservatively cut, and includes a large mustache. His piercing dark brown eyes, under heavy brows, nearly match his heavily tanned skin... what the Victorians call "sunburnt". He has a few scars on his forehead, cheeks and right forearm.

At 42, he's spent a few years in the British Colonial Office, most recently on Mars. Since he's been back, he's been studying the new defensive art called Baritsu.