Here are some examples:
The Four Horsemen (Marvel)
The Four Horsemen (Sleepy Hollow)
The Four Horsemen (Supernatural)
Death (Supernatural)
Famine (Sleepy Hollow)
Death (Horsemen)
4-Lom (Star Wars)
The Four Who Speak As One (Sleepy Hollow)
The Four Horsemen (Horsemen)
Quattro (Yu-Gi-Oh Zexal)
General Grievous (maybe?)
