|Hold it right there, outlaw!|
This article is littered with spoilers, so I reckon you might ought'a mosey on down the road if you don't want to read any plot details.
–Gordon Fowler, upon selection in Showdown Mode
According to Sheriff Bartlett's Journal, Gordon "Digs" Fowler may have earned his nickname either from the way he digs into every bit of food he can find or the way he digs into people's chests with his pick-axe.
Red Harlow first fights with Gordon in mission Carnival Life alongside with Fidgits. While Fidgits spawned more than once in mission Digs only spawn once. Red has a duel vs. three opponents during the mission "Ghost Town". One of the opponents is "Digs" Fowler Bandito and Jesse Lynch. He also appears as a recurring opponent in mission Cemetery, attacking the player with his pick-axe if he gets close enough.
Fowler is unlocked as a playable character in Showdown Mode by successfully completing the level "Ghost Town" in under four minutes in Bounty Hunter Mode. He can also be unlocked by purchasing the Dirt Shovel at the start of the mission "Sunset Canyon".
Sheriff Bartlett's Journal
Gordon "Digs" Fowler is listed in Sheriff Bartlett's Journal on pages 116 - 117 under the Outlaws in Twelve States section. The pages are unlocked by unlocking his showdown character by either of the methods noted above.
- On the rewards screen for "Ghost Town" in Bounty Hunter Mode as well as on the player selection screen in Showdown Mode, his nickname is singular as "Dig" Fowler. In the title and text of his journal page it is plural as "Digs", which makes sense given Bartlett's description.