My Hero Academia: 10 Most Underrated Heroes
2. Real Steel
Class 1-B's answer to stone-skinned Red Riot is Tetsutetsu, otherwise known as Real Steel. This physically powerful hero has been largely shoved into the background since his debut at the Sports Festival. He's still around though, having appeared in numerous arcs since then, and seems to have lost none of his motivation to compete with his rival Red Riot.
It's true that Real Steel's quirk doesn't leave much space for creativity, but as proved by the likes of All Might, in the MHA universe physical strength is often all that's needed to crush opposition. His quirk can't be overused, as Tetsutetsu suffers from iron fatigue if he stays in his metal form for too long. This isn't an insurmountable issue, however.
Judging by the way other heroes developed their quirks, it seems likely that time and attention will help with this problem, meaning Real Steel could become one of the strongest new heroes to come out of UA.