He thought it was a rather unfortunate name, and really wasn't sure how it could be too much worse than 'Hiccup', but for all he knew, it was a big tough burly guy with one of those ironic names. After all, Astrid really didn't seem the type to go for anything less than that.
Trolls. Evils. Booth blinked once, but other than that he didn't let it show on his face how foolish he thought that was. He was aware that every culture had their own little quirks, and it wasn't like he wasn't superstitious about some things too - Bones made fun of him enough for that - so... to each their own. But. Trolls? Really? Arctic trolls?
When she called him on his following, his innocent expression was purely genuine. "Because we're becoming such fast friends," he said, a bit testily before he calmed his tone and said, "Also, because I'm still not sure what to make of this place, and wouldn't mind having some back up nearby in case something..." he waved a hand, before he scowled. "But if you'd rather be on your own, I'll leave you to your business."