(( hey guys im back ^_^ ur piratekit, some headcanons included! ))
Frankenhammer decided, why not trying to tease you a bit?
You spent some time looking around an old library, just interested in what you'll find. Treasures? Interesting books? Maybe some healing crystals out of nowhere? Or perhaps something nice? Frankenhammer was hidden behind one of the bookshelves, He would peek from time to time, to see where you are.
You essentially walked closer to the bookshelf he was hiding behind, looking at books out of curiosity. He would chuckle internally, before getting ready to startle you.
" BOO! " He yelled as he jumped out of his hiding spot. " Did I scare ya?! "
He laughed a bit, having fun with this. He liked teasing you like this, it was basically his love language.