Category tree for The_Professor
- Puyo series
- Character
- Unimaginatively named
- Entity (repeated)
- Puyo Wars
- Puyo series (repeated)
- Video game
- Battle strategy
- Madou Monogatari
- Series (repeated)
- Compile
- Company
- Organization
- Concept (repeated)
- Organization
- Company
- Professor
- Entity (repeated)