Strong's G4414 — πρωτοστάτης (noun)
protostates (pro-tos-tat'-ace) n.
1. one standing first in the ranks, i.e. a captain (champion)
[from G4413 and G2476]
KJV: ringleader 
Root(s): G4413, G2476 
Hebrew root: ἵστημι
Occurrences: 1