At a San Diego Comic-Con panel, Mark Hamill found himself remembering his old days of Star Wars after he described how stunning The Wild Robot, his upcoming film, is.

Backed by DreamWorks Animation, the film focuses on a robot called Roz and its misadventures.

The 72-year-old who voiced Thorn, a fierce grizzly bear, recalled being stumbled upon the robot from the children’s book by Peter Brown.

“I thought, ‘If they could capture just a small percentage of the effect of this book,’” the Invincible star told the crowd. “And I have to tell you, they did a fantastic job.”

The project nonetheless made him reminisce about his iconic movie Star Wars, he said.

“You just have to see it,” the Oakland native continued. “It reminds me of back in the day when I was trying to describe Star Wars to people who hadn’t seen it. It’s sumptuous. It’s emotional. It works on so many levels. The kids will love it. The whole family will love it.”

The Wild Robot besides Mark will see Nyong’o, Connor, Pedro Pascal, Bill Nighy, Stephanie Hsu, and Catherine O’Hara in the voice casting.