Lockheed first met the young mutant, Kitty Pryde, during a battle between the X-Men and an alien race known as The Brood. There he helped save Kitty from the Brood, by chasing them away with a burst of flame. Kitty wondered if he could talk, but before she could find out, an explosion rocked the both of them. As Kitty ran out of the cave she was stuck in and back to the rest of the X-Men, she found that Lockheed had disappeared.
But unbeknown to Kitty, Lockheed secretly stowed away with the X-Men back to Earth, appearing later at the X-mansion. At first, his reappearance surprised her, but then she was excited that she was able to find him again. He later helped her battle some Sidri aliens that had invaded mansion. When he went with Kitty to meet Professor Xavier, Xavier found out that he couldn’t probe Lockheed’s brain with his telepathy and he agreed that Lockheed could stay with her at the X-mansion. Kitty named him Lockheed after the X-Men’s XR-71 Lockheed Blackbird jet and the two of them became inseparable, forming an empathic bond with each other.