Jarod Joseph shirtless in The 100 6-01 "Sanctum"

Richard Harmon shirtless in The 100 6-01 "Sanctum"

Mike Dopud shirtless in The 100 5-08 "How We Get To Peace"

Bob Morley shirtless in The 100 5-06 "Exit Wounds"

Richard Harmon and Chai Hansen shirtless in The 100 4-09 "DNR"

Bradley Stryker shirtless in The 100 4-08 "God Complex"

Bob Morley and Henry Ian Cusick shirtless in The 100 4-07 "Gimme Shelter"

Chai Hansen shirtless in The 100 4-07 "Gimme Shelter"

Devon Bostick shirtless in The 100 4-02 "Heavy Lies The Crown"

Jonathan Whitesell shirtless in The 100 4-02 "Heavy Lies The Crown"

Henry Ian Cusick shirtless in The 100 4-02 "Heavy Lies The Crown"

Christopher Larkin shirtless in The 100 4-01 "Echoes"

Zach McGowan shirtless in The 100 4-01 "Echoes"

Christopher Larkin shirtless in The 100 3-15 "Perverse Instantiation: Part One"

Richard Harmon shirtless in The 100 7-16 "The Last War"

JR Bourne shirtless in The 100 7-14 "A Sort of Homecoming"

Sachin Sahel and Jarod Joseph shirtless in The 100 7-14 "A Sort of Homecoming"

Jason Diaz shirtless in The 100 7-09 "The Flock"

Richard Harmon shirtless in The 100 7-12 "The Stranger"

Richard Harmon shirtless in The 100 7-07 "The Queen's Gambit"