παραστάτης
παραστάτης
πᾰραστάτης, ου, ὁ,
παρίσταμαι
one who stands by, a defender, Eur.
oneʼs comrade on the flank (as προστάτης is oneʼs front-rank-man, ἐπιστάτης oneʼs rear-rank-man), Hdt., Xen.: generally, a comrade, supporter, Hdt., etc.
oneʼs right or left-handman in a chorus, Arist.