"I am willing to do anything to become more powerful. However, I can't picture myself coming even close to attaining Sensei's power."
He is an extremely serious character, very rarely ever making jokes. He constantly strives to become stronger and pesters his "master" to train him frequently. On most occasions, Genos acts as a comic foil to his sensei's clueless antics, using a variety of special techniques, battle tactics and robotic upgrades to combat villains (and sustaining terrible damage in the process).
Due to his popularity with the ladies, his scent blend is a nice masculine blend with a bit of "metallic" scent notes of bitter orange and smokier notes of vetiver.