Igneous Rock Pie

Igneous Rock Pie is a member of the Pie family. He is the wife of Cloudy Quartz, and the parent of Limestone Pie, Maud Pie, Pinkie Pie, and Marble Pie.

Depiction in the series
Igneous Rock first appears in Pinkie Pie's flashback in The Cutie Mark Chronicles in which Pinkie throws a party to spread cheer to her family. Shocked by the party at first, Igneous slowly smiles and join in the festivities.

He appears in Trixie's flashback in Magic Duel.

He appears in a photo with their daughters in Pinkie Pride.

Pinkie alludes to her mom and dad in The Cutie Map - Part 1 when she sees the rock farm on the eponymous map.

In Party Pooped, Applejack finds plans in Pinkie Pie's secret party-planning room for Igneous Rock and Cloudy Quartz's fiftieth, one-hundredth, and five-hundredth anniversaries.

He has a major role in Hearthbreakers when the Apple family and Pie family spend Hearth's Warming Eve together. He is depicted as stereotypically Amish, speaking in old English and acting very traditional. Initially unreceptive to the Apples' traditions, he and Cloudy Quartz eventually come to accept them, with Igneous even trying to adopt some of Granny Smith's country mannerisms.

Igneous appears at the beginning of Rock Solid Friendship attending Maud's graduation ceremony.

In the holiday special My Little Pony Best Gift Ever, he and Cloudy appear celebrating Hearth's Warming Eve with his family and Applejack's family.

Igneous briefly appears in Pinkie Pie's group shot during The Magic of Friendship Grows in The Last Problem.

Trivia

 * He is the third pony to have Terry Klassen as his voice actor, following Hoops (Young) and Cherry Fizzy (also from Season 1).
 * He is one of several Earth pony stallion to have Peter New as his voice actor.
 * He and Cloudy Quartz both do not appear in Season eight. However, his daughters appear.