Well, I figure they'd try to appeal to Tavros, since he's already sympathized with one agent. Assuming they know about that, in which case they should probably claim the agent was acting without orders or something. He's way too willing to put the past behind him and forgive extremely dangerous people against all reason, no matter what he might have said after the kidnapping.

Depending on if they research his race or him specifically, they might either try to play up him being a child of Alternia and being destined to be a conqueror of alien worlds, or they might just offer him and a few close friends safety and happiness. Or both. If they're going for the first route, they should try and shame him. As ever, his weak spot is his self-esteem.

Or hey, feel free to use anything else that comes to mind, too.