Here's my take on the obey me characters and how muscular/strong/athletic they are.
Lucifer is athletic in the way a gymnast is. His body can contort very easily, if he stretches and he's naturally very flexible. He is physically strong, but his muscles aren't as visible on a day-to-day basis like, say, Diavolo and Beel.
Mammon is athletic in the way a track runner is. Thick thighs save lives, you know? He's not very built on the top half of his body, but he has incredibly strong and defined leg muscles.
Levi has basic strength in areas because of games like Beat Saber where he has to move. His muscles do not show and he definitely doesn't have a six-pack.
Satan doesn't work out very often, but as a wrath demon, he's naturally somewhat muscular. It's not visible unless he stretches, but he is strong.
Asmo is athletic like a dancer is. He has strength everywhere in his body. Though he isn't as flexible as Lucifer, he can contort his body better for his lovers. <3
Beel is incredibly muscular, as we see in game. Working out basically the thing he does for fun outside of stuff for his brothers and eating. His muscles show very easily and his physical strength is only beaten by Diavolo.
Belphie doesn't have basically any muscle. He's very light because he has a high metabolism, which makes him skinny, and he doesn't eat a whole lot.
Diavolo is incredibly muscular and very strong. He's also surprisingly flexible. Diavolo doesn't work out as much as Beel, but as a royal demon, he's built to keep muscle mass easily.
Barbatos is athletic like a ballet dancer. He has strength but he's incredibly graceful. He's not as flexible as Asmo, but he does do regular ballet stretches to keep the flexibility he has. A very skilled ballet dancer.
Solomon has some muscle. He originally built strength because of Asmo and he found he enjoyed going on the occasional run and lifting weights. He's average build, but is still strong.
Simeon is athletic, but his muscles aren't very visible. He is strong, but definitely not as strong as the big brutes (Beel and Diavolo). He prefers to dance and go on runs with Solomon to keep his strength up.
Mephisto isn't strong, but he is incredibly skilled at riding horses, which has to count for something. While he can throw a mean punch, he doesn't have the muscle or strength for a real fight.
Raphael works out regularly and is quite athletic. As a soldier, he has to keep his endurance and strength up. His build is average, like Solomon, but he has hidden strength.
Thirteen is athletic. She runs around a lot, so she's built up a lot of endurance. She has some muscle, but not much because she doesn't train for it. Reapers are naturally strong, so she doesn't worry about muscles.
If you have any asks, feel free to send me them!
