Sigurd grinned and pat Amelia's head with his fingerless gloved hand. "No need to apologize kiddo. Let bygones be bygones shall we?" Even if he was a loud person Sigurd was as far as someone can get from being mean. Scary, yeah, if someone were on the receiving end of his fists when in a scuffle then yes that would be scary. It's not like he wanted to frighten this little girl, hell he's never really thought of himself as an intimidating person at all. Then again being the loud person that he is would be frightening to someone who is afraid of loud things, like him. 

He offered his hand to help her back up. "The name is Sigurd Melodia, call me however as you wish. That little rascal over there is Rusty and that is..." He looked at the piplup for a solid ten seconds before shrugging. "I'll name it later." Hopefully introducing himself to her would make her feel less nervous than she already is.