(Please suspend your disbelief.)
Mimic nods and motions for Sue to back away from the training field. He presses a button on his watch, and the entire arena begins to tilt to one side, before completely flipping over, revealing a huge concrete building. While waiting for the arena to turn over, Mimic glances at Sue out of the corner of his eye, and as he admires her curves, he thinks,
"One day Calvin, one day." (Creepy I know, but it lays the groundwork for something we're doing in the future)
He taps Sue on the shoulder, and once he has her attention, he pulls her into an embrace that lasts for a few moments. During the embrace, he closes his eyes as he absorbs her knowledge of sign language. He lets go, then signs, "Sorry about that, but the more contact I have with a person, the faster I absorb their powers and knowledge. You're going to go in the door nearest us, and I'm going to go in a door on another side of the building. Inside is a maze with various obstacles that you'll have to bypass while you attempt to find me. A series of cameras will keep me updated on your progress, and once you find me, I'll critique your performance."
Mimic quickly flies away, disappearing around a corner of the concrete building.