Diana Back in Time

 was an American animated adventure-comedy television series, being created by TBD. It was produced by Nickelodeon Animation Studios and it aired on Nickelodeon from May 16th, 2009 until July 17th, 2014.

Synopsis
Diana is a selfish and slightly egocentric teenager who finds an old time machine as soon she begins traveling back in time for selfish reasons as she soon has to deal with both the time police and an A.I. who wants Diana to time travel for good reasons.

Main

 * Diana Berry (voiced by Grey DeLisle) - an egotistical teenager who finds a time machine as she heads to head back in time to have fun as she usually uses it for selfish means.
 * Mr. Time (voiced by Corey Burton) - a cautious A.I. who is installed into the time machine as he is sent to keep Diana in line although he often fails.

Supporting

 * Brad Berry (voiced by David Kaye in modern day and Scott Menville in the past) - Diana's widowed dad who tries to be caring for his daughter, although he can be seen as incompetent.
 * Lucia Markson (voiced by Hynden Walch) - Diana's girly best friend who loves hanging out with her best friend as she occasionally joins her in her time traveling adventures.
 * Luke Summer (voiced by Michael Rosenbaum) - a calm and friendly teenager who is surprisingly a jock as Diana has a slight crush on him.
 * Collin Callow (voiced by Seth Green) - an immature and somewhat idiotic teenager who doesn't take things seriously as he is considered to be the most annoying kid in the school as almost everyone dislikes him.
 * Mr. Adam Black (voiced by Tom Kenny) - the goofy and eccentric history teacher who enjoys teaching history as he sees Diana as a kindred soul.

Historical/time travel figures

 * Marie Berry (voiced by Nika Futterman) - Diana's deceased mother who was extremely caring and goofy as she died due to a rare illness, with Diana occasionally coming to visit her in the past.
 * Cleopatra (voiced by Erica Luttrell) - the slightly seductive yet friendly queen of Egypt who is forcefully married to Caesar and actively tries to avoid him.
 * Joan of Arc (also voiced by Grey DeLisle) - a French warrior who is somewhat rebellious as she oddly resembles Diana and is somewhat chaotic.
 * William Shakespeare (voiced by Mark Hamill) - an eccentric playwright who has created numerous famous plays as he can be a bit of a control freak.
 * George Washington (voiced by Adam West) - the kind-hearted first president of the United States who is trying to bring the country in order.
 * Thomas Jefferson (also voiced by Tom Kenny) - a talkative and passionate founding father who believes in freedom for everyone as he helped make the Declaration of Independence.
 * Alexander Hamilton (voiced by Richard Steven Horvitz) - Washington's suck-up advisor who both wants an obsessive order over the United States and constantly tries to make sure to be on Washington's good side.
 * Benjamin Franklin (voiced by TBD) - a somewhat insane founding father who is known for getting into several insane situations while also being friends with Thomas Jefferson.
 * José de San Martin (voiced by André Sogliuzzo) - a skilled yet flamboyant Argentine general who grew in Spain as he battles the French army, although he is somewhat obsessed with himself.
 * Abraham Lincoln (voiced by TBD) - the humble 16th president of the United States who is surprisingly very kind and shy.
 * Albert Einstein (voiced by Maurice LaMarche) - an extremely smart yet somewhat short-tempered scientist who is on the verge of making the ultimate mathematical equation.

Antagonists

 * The Big Man (voiced by Dave Wittenberg) - the mysterious head of the Time Police who is Ella's boss as he mainly appears in the shadows, wanting to capture Diana and confiscate her machine.
 * Ella K. Mentary (voiced by Jennifer Hale) - a crazy experienced member of the Time Police who learns that Diana stole a time machine as she is obsessed with bringing her in.
 * Smitty (voiced by Greg Cipes) - an anxious Time Cop rookie who is Ellie's partner as he is somewhat nicer compared to his partner.
 * Victoria Pines (voiced by Catherine Taber) - a snobby and rude teenage girl who is a massive bully as she enjoys picking on Diana, finding her to be weird.
 * Barbara "Babs" Connor (voiced by Ashley Johnson) - Victoria's idiotic best friend who loves hanging out with her best friend, although she enjoys bullying Diana as well.

Historical/time travel figures

 * The T-Rex (vocal effects by Dee Bradley Baker) - a Tyrannosaurs Rex who was brought into modern day by Diana as it began causing chaos.
 * Julius Caesar (voiced by [near emotionless]) - the cold yet charismatic emperor of Rome who is Cleopatra's lover as he has a stranglehold over both Egypt and Rome.
 * Edward Teach/Blackbeard (voiced by [burly]) - a charismatic traveling pirate who has accrued a considerable amount of wealth as he can quickly turn vicious.
 * Marie Antoinette (also voiced by Hynden Walch) - the young yet gluttonous and greedy Queen of France whose utter greed has caused a massive revolution.
 * Cyber Hunter-6000 (voiced by Jim Meskimen) - a robot from the future who Diana sent to deal with Victoria and Babs as he soon believes that they must be killed.

Episodes
See List of episodes.

Trivia

 * While some events try to be as historically accurate as possible, others have their traits exaggerated for comedic purposes.