Chrome

Chrome is a young man of average height and build. He has spiky brown hair and keeps a rope tied around his head like a headband.

His usual attire consists of a dark blue short-sleeved shirt, matching pants, a rope belt, and small pouches containing materials he has collected. He sometimes also wears a cape that matches the color of his outfit.

Chrome is portrayed as an energetic and quite curious person. He shows a great interest in science through the experiments and projects Senku undertakes. He is quite confident in his abilities and attempts to help Senku, even in high-risk situations. Chrome is shown to be someone who doesn't care much about age when it comes to friendships; this can be seen when he considers Kaseki one of his best friends, even though Kaseki is over 50 years old compared to him.

Apart from that, Chrome possessed the ability to track rare metals, although he wasn't aware of it; he always found metals that would benefit the creation of scientific weapons.

He primarily tends to worry about others, especially Ruri, with whom he has been in love since childhood. He also decided to study medicine for Ruri, along with Senku, Kohaku, and Suika, and with the support and help of Kinro, Ginro, and Kaseki.