Between being half-expecting it and having had enough exposure to that name by now to have lost a tiny bit of the aversion, Soldat manages to not actually flip their damn lid at hearing her say it. The flinch is definitely visible and clearly uncomfortable, though. If... a robot can register what discomfort looks like on a human.

This might be why they made sure nobody else was within earshot, though. "I. I don't. Use either of those names. Actually. I go by Soldat. Can you call me that?" Do robots understand Russian? It doesn't auto-translate, given its use as an actual name rather than a word in conversation, but Clara might actually know Russian....