Princess Joanna
Background
Joanna is a princess in 15th century England. Her uncle is Evil Duke and her cousin is Princess Elizabeth.
During the events of Bill & Ted's Excellent Adventure (1989) played by Diane Franklin
Ted "Theodore" Logan and Bill S. Preston see Joanna and Elizabeth on the balcony of the castle. They sneak into the castle and find Joanna and Elizabeth and introduce themselves, but they are forced to hide when Evil Duke calls out to Joanna and Elizabeth. Joanna and Elizabeth ask Bill and Ted to help them escape from their upcoming forced marriages, but Bill and Ted are captured. Later, Rufus shows up with Joanna and Elizabeth who join the band and as Bill, Ted, Joanna and Elizabeth play, Rufus promises that in time, they do get better.
During the events of Bill & Ted's Bogus Journey (1991) played by Sarah Trigger
Bill, Ted, Joanna, and Elizabeth are practicing their music in front of Ms. Wardrobe. Ms. Wardrobe tells them that they are terrible, but she will give them the midnight slot during the 4th Annual Battle of the Bands. Bill, Ted, Joanna and Elizabeth go to Bill and Ted’s apartment for Joanna and Elizabeth’s birthday party and tell Captain Logan that they made it into the Battle of the Bands. Colonel Oats tells Ted that he always has a spot ready for Ted at his military school. During the party Bill and Ted propose to Joanna and Elizabeth and give them plastic engagement rings. Later Evil Bill and Evil Ted aggressively try to kiss Joanna and Elizabeth. Evil Bill and Ted continue to be mean to Joanna and Elizabeth until they remove their engagement rings and leave.
Evil Bill and Ted drive to Captain Logan’s house and crash their car and fly through the house window while Missy, Joanna and Elizabeth are sitting on the couch. Evil Bill and Ted grab Joanna and Elizabeth and try to forcibly make them go with them but are stopped by Missy. Bill uses evil breath to knock Missy unconscious and then they show Joanna and Elizabeth that they are automatons. At the Battle of the Bands. The first band to play is Primus. Ms. Wardrobe asks Evil Bill and Ted where Joanna and Elizabeth are, and they tell her that they are hanging from the rafters, and they are going to kill them during the finale. Ms. Wardrobe introduces the Wyld Stallyns and Evil Bill and Ted walk onstage. Bill and Ted walk onstage with the Grim Reaper and tell the crowd they are the Wyld Stallyns and Evil Ted shows them where Joanna and Elizabeth are hanging from the rafters. Good Robot Bill and Good Robot Ted walk on stage and punch the heads off of Evil Bill and Ted and then make them explode while the crowd cheers. The Stations lower Joanna and Elizabeth and they kiss Bill and Ted.
De Nomolos appears in the time booth and introduces himself to Bill and Ted. He pulls out a rifle and then shoots a projectile that takes over the broadcast satellites across the world. He tells the world that he wants them all to see the transfer of power. He continues that from now on society will be based on his ideas and not Bill and Ted’s. Bill and Ted decide to go set things up after things are resolved so a sandbag and cage fall on De Nomolos in the present. De Nomolos counters their idea and says that in the future he will set it up so a key appears, which it does. He opens up the cage and steps out and another rifle appears in his hand. When he pulls the trigger a piece of fabric comes out with the words Wyld Stallyns Rule. The Grim Reaper tells De Nomolos that his shoes are untied and when De Nomolos bends over to look, the Grim Reaper gives him a Melvin. Captain Logan arrests De Nomolos and takes him away. Ms. Wardrobe reveals herself to be Rufus in disguise and Rufus tells them about De Nomolos. The Wyld Stallyns travel in the time booth to practice and then appear seconds later, but also with a child each. They introduce the rest of the band which also now include the Stations Good Robot Bill and Good Robot Ted and the Grim Reaper. The Wyld Stallyns play and win the Battle of the Bands and eventually play on Mars.