Sogiita Gunha (削板 軍覇 Sogīta Gunha) is the 7th ranked Level 5 esper in Academy City and the most powerful Gemstone esper. Despite being a Level 5, the underlying nature of his ability is unknown and defies the understanding of Academy City, despite the best efforts of their scientists to determine its mechanics. His rank as the 7th may not be reflective of his true capabilities since no one truly understands his powers, an idea supported by some of his fights in the series.