With four episodes left to let fly in Season 4, The CW’s Arrow already is setting out to fortify its quiver for the fall.

Earlier this spring, the superhero series promoted Echo Kellum, who plays Palmer Tech whiz Curtis Holt, to series regular status for Season 5. Now TVLine has learned that Arrow is also adding the series regular role of “James,” an “irrepressibly charming” contemporary of Oliver’s who is described as “a man on a mission” — out as he is to avenge a tragic, violent loss from his own, years-ago past.

The casting call seeks an actor of any ethnicity, in his late-20s to 30s and who comes across as a physical threat. The character is said to “just as easily shake your hand as your best friend or break your neck as your worst enemy — and you never know which one is coming. Either way, he’s more than capable of having a good time as he does it.”

This is where you put on your armchair casting director’s hat and suggest the perfect actor for Arrow to target.