Season 2 Episode 16
Episode 35, "Last Chance to See Those Tattoos" from season 2.
Season 1, Episode 10.
The episode is called "Harper Knows". It is in season 2 and is the episode were Harper finds out the Russos are wizards.
If you are talking about the episode "Lair of Grievous" from the Clone Wars TV show, Grievous's lair was on the planet Vassek which is in the Outer Rim.
No, she doesn't know until the episode where they are all superheros going to a convention. Then she sees the liar. She does now!
Harper
David W. Harper did not appear in the "The Substitute" episode of The Waltons because he was not a regular cast member on the show. The episode may not have included his character, Jim-Bob Walton, in the storyline.
YES in the episode " wizards unleashed " but, they're going to break up in the episode "Max's Secret Is Revealed" because Zeke was cheating on Harper with Anastashia Beckingsdale.
It has already came out
In the episode where Alex shrinks herself to fit inside her dollhouse. Harper moved in because her parents were moving, but she wanted to stay.
In the Dragoons lair. its furthest to the right