Greg Kleckner

Greg was the son of Kyle and Kathy and the older brother of Gabrielle. He disappeared saving his sister and Lilo from Dr. Hamsterviel. He hasn't been seen since.

Personality
Greg cared deeply for his sister and made sure she was protected and happy. His disappearance caused everyone to think he is dead and upset Gabrielle deeply because she and Lilo saw what happened to him.

Biography
Greg was born on May 14, 1989. Not much is known about his childhood.

Lilo & Stitch: A New Dimension
Greg made his debut when meeting Lilo, Stitch, Jumba, Pleakley, Gantu, and Reuben at the end of the film.

Save The Cats & Experiments
Greg had a major appearance in part one of the third episode. He sent off to rescue his sister, Lilo, the cats, and the experiments from Dr. Hamsterviel and his Leroy clones. He rescued them, but disappeared in the sinking ship. It is unknown if he survived or not.

Mertle
Greg is mentioned in this episode by Lilo.

Gabrielle meets Angel
There is a flashback of what happened to Greg and Jardon School.

Angel, The Pop Star
Greg is mentioned when Reuben asked Gabrielle if she has any siblings.