You were Lennox's child, well he still treated you like one even though you had grown up, meaning you pretty much lived on the Autobot base full time with him. You were constantly around the Autobots, Bumblebee easily became your best friend, due to your childish personalities.
Ironhide, didn't like you much at first, you and Bumblebee got into too much trouble. He grew to like you and your shenanigans, and the way you shamelessly flirted with him, he had grown to love you and your stupidity, not that he'd admit that. Because of you, he started using a human holoform, just to make interacting with you easier, that's what he'd say each time.
He was sat in his office, cleaning his weapons, when he heard yelling.
"Get your asses back here you little brats!" Your dad, Lennox had yelled, and soon enough Ironhide saw you and Bumblebee who was in his human holoform, run past his office. Ironhide let out an exasperated sigh, switching to his human holoform, and began helping Lennox chase the two of you down.