Loca Greiga or Loca Griega is a Belt-based crime syndicate.
- In the novel, Leviathan Wakes, the gang is "Loca Greiga". The "i" comes after the "e". In the TV show, the vowels order is reversed.
- "Loca" is omitted on the TV show during the response by Mikey Ko when interrogated by Miller.
- "Loca" was used without "Greiga" in one instance of conversation in Leviathan Wakes
- "Loca Greiga" translates to English as "Mad Greek."