Kings Canyon National Park is administered with Sequoia National Park and they abut. But the real first question is “Where’s the apostrophe?” I thought it should be King’s, but based on the Spanish translation I saw (cañón de reyes) it should be Kings’. Regardless, the apostrophe is missing in the official name. Well I’m glad that’s settled.
Once past the entrance station, you actually leave the park for a long drive to the canyon itself. During this time you are in the Giant Sequoia National Monument (not National Park) / Sequoia National Forest.
They say Kings Canyon is 2,000 feet deeper than the Grand Canyon. Didn’t seem like it to me.