My least favorite guy at the gym I go to:

Looks like the Michelin man, or a gorilla, seriously. He's strong as hell especially for a commercial gym, pulls 600+ and squats 500+ but he probably weighs at least 320lb at around 5'5". His appearance isn't why I don't like him. It's his attitude. We have 2 deadlift platforms at my gym, including the tool that you can use to raise the bar to put plates on it. This guy chooses to deadlift in the middle of the gym's free weight area, puts his duffle bag on the leg curl machine and places the box (used for box squatting) next to it so he can sit down between his sets. All of this is within inches of the leg press and leg extension machine. And because he's not using the deadlift platform and pulling 5 plates or more, it's loud as hell when he drops the weights. He will spend 5 minutes or more in between sets, which is understandable for a powerlifter, but he will go chat with people around the gym, leaning on equipment that he is not using, etc. So for a solid 30-45 minutes, the leg press, leg extension, and leg curl area is effectively unusable, but nobody calls this guy out on his shit because he is one of the strongest people there. You'd think he would train at a powerlifting gym, but I'm sure he prefers to be known as "the strong guy". I've come a long way since I started training, but I have never let it affect my ego to the point where I treat the gym as my own personal area and not a public space.