Former member of the Oni-Baku and is best friends with Onizuka.
Ryuji Danma is a former member of the Oni-Baku gang form Shonan and is best friends with Eikichi Onizuka. There friendship is detailed more in the Bad Company Manga. His goal in life as well as Onizuka`s was to lose his virginity and be part of the best gang in Shonan. Known as the bomb (Devil-Bomb) he is equal to fighting as Onizuka is but is in more control. He has better luck at women as he developed a love relationship with Ayame in Shonan Junai Gumi and Nagisa in GTO. Being a big fan of motorcycles during his high school days, he now runs a garage to fix bikes of any kind. His kind nature is severely tested as Onizuka will continue to ask favours from him but is willing to help him as they have both stared death on many occasions.
During Ryuji’s teenage years (Shounan Junai Gumi) he was embroiled in multiple fights and girls. With Onizuka they attempted to have sex with various girls a number of times but failed as they were to aggressive or just plain dumb. No one can question his desire to fight as he was one of the best in Shounan but he was more mature then Onizuka when it came to dealing with women.