I'm doing a sound design demo where a gladiator is fighting a minotaur in a coliseum. Basically I want the minotaur (and the gate he emerges from) to seem further back, and the gladiator either to be first person or close 3rd person. Is there some sort of effect I can use to push the minotaur back? My instinct says reverb, but I'm kind of concerned with the coloration it gives the gate.
Also, the main character's voice is recorded pretty dry; would some degree of ambience be expected, considering it's an outdoor coliseum? Any ideas for stuff I could listen to as another reference point?