Since he'd been mistaken for a drow during his first visit, and nobody other than Astarion had gotten a look at his ears or uniform, Thrawn saw no reason to not use that to his advantage. Any questions about his eyes could be waved away as magic. He had even been tempted to color his hair white too, only to decide against it.

"Indeed I am." Thrawn took the spot next to Astarion, glad that the elf was playing along with the disguise.

There was that fake smile again. Thrawn ignored it for now. "It seems that I missed something quite eventful since I left."