Shingo Murasaki (村崎真吾 Murasaki Shingō) is a leading member of the Mad Angels.
Shingo is obsessed with military supplies, always wearing camouflage clothes and army boots. He has a nervous, cold-blooded personality that causes him to take complete, merciless revenge on anyone who crosses him. Even the other members of the Mad Angels are afraid of him. He and Minoru Okayasu, another leading member of the Mad Angels, have known each other for a long time. They usually hang out together.
- Shingo's zodiac sign is Pisces and he has a B blood type.