The Pegasus didn’t know what to say. She can feel, she can sense, she knows just how dangerous and powerful the creature in front of her is. The way everything avoided the human like a plague, his very presence is just... wrong. Like he’s not meant to be anywhere near Equestria...

Then she looked at her friends. The way they befriend him in only a matter of seconds, the way they smiled and welcomed him with open hoofs... It finally clicked to her, the one thing that starts all friendship.

“Bruce...” Fluttershy whispered suddenly. “Is it all right if I trust you?”

Bruce Gunderson: A Dimension Hopping Idiot, the Last Human, and the Protector of Equestria.

The latter title was gained when he accidentally destroyed the Elements of Harmony upon his arrival to Equestria. Considering he was known as the Harbinger of Death and Destruction a few centuries ago. It's not that much of a surprise.

To be fair, he's doing the best he can to protect his new home.