User blog comment:Trihexa/Top 10 Most Powerful Beings In The World (Unofficial)/@comment-31456106-20170305211830

In all honesty by research about the characters, Issei is definitely on the list. Towards the end of the manga he defeated Rizevim Lucifer, which has the sacred gear ability to negate any boosted gear ability. Issei overpowered Rizevim's power, which was thought to be unbeatable, proving that Issei is a dangerous opponent to underestimate. He also has Ddraigs flames, which will burn anyone or anything until deduced to ash, except for Albion or a Phoenix. He also is said to be at the same power level as an ultimate class devil. He is very skilled in combat, tactician, and survival skills. Overall there are many traits about him that make him amazing and immensely strong, but there are others who are stronger than him (Orphis/Lilith, Great Red, Trihexia, and Shiva)