No idea who he is but that upper body is amazing, especially the chest : r/bodybuilding
Everyone's upper chest is underdeveloped or can be bigger, it's what gives you that shelf and round look to the chest, everyone alway
The Best Inner-Chest Workouts for Getting Sculpted - Onnit Academy
The Best Chest Exercises for Building Muscle, Plus 4 Full Workouts BarBend
Severely Uneven Chest - Bigger Stronger Leaner - COMMUNITY - T NATION
Breast development: Stages and how to spot growth signs - Flo
What are the problems that can be caused by undeveloped chest muscles? - Quora
7 Exercises for a Killer Outer Chest Workout - Steel Supplements
What are the problems that can be caused by undeveloped chest muscles? - Quora
The Grey Truth About Skinny Muscle-Building Genetics
The Best Upper-Chest Workout for Getting Defined Pecs - Onnit Academy