Grant is the Former Chief Deputy US Marshal of the Miami, Florida division. Raylan Givens is a Deputy US Marshal under his command.
Grant appears first in "Fire In The Hole" when he has Givens reassigned to the Lexington, Kentucky division after he shoots Tommy Bucks in broad daylight in a hotel restaurant. Givens provoked the confrontation although Bucks drew his weapon first.
In "The Moonshine War". Raylan Givens and Gio Reyes are having a tense confrontation. Raylan wants Gio to end the hit called on him, due to innocent people Raylan cares about being caught in the crossfire. Raylan orders Gio to give him his word in 10 seconds or he shoots him in the head. Before Raylan can act, Grant calls and orders Raylan not to try again. Grant orders the two men to discuss it further outside. Grant tells Gio that if he comes after Raylan again and harms him in any way, that Grant will kill Gio himself. Grant offers Raylan his old job back, but Raylan declines the offer, wanting to stay in Kentucky.
Grant appears in "Full Commitment" when Raylan calls him about the hitmen from the previous episode "Debts and Accounts". Grant asks him was it Gio, and tells from from what he has heard, Gio only hires Cubans these days. Grant then asks Raylan if he has pissed off any shitkickers lately, to which Raylan has a surprised look on his face.
- Raylan Givens: U.S. Marshal, former subordinate
- Art Mullen: Colleague, Chief Deputy U.S. Marshal in Lexington, Kentucky
- Karen Goodall: Assistant Director, former subordinate
- Greg Sutter: US Marshal, former subordinate
|Season one appearances|
|Fire in the Hole||Riverbrook||Fixer||Long in the Tooth||The Lord of War and Thunder|
|The Collection||Blind Spot||Blowback||Hatless||The Hammer|
|Veterans||Fathers and Sons||Bulletville|
|Season two appearances|
|The Moonshine War||The Life Inside||The I of the Storm||For Blood or Money||Cottonmouth|
|Blaze of Glory||Save My Love||The Spoil||Brother's Keeper||Debts and Accounts|
|Full Commitment||Reckoning||Bloody Harlan|
|Season five appearances|
|A Murder of Crowes||The Kids Aren't All Right||Good Intentions||Over the Mountain||Shot All to Hell|
|Kill the Messenger||Raw Deal||Whistle Past the Graveyard||Wrong Roads||Weight|