Barney the Dinosaur is a two-hundred-million-year-old (two dinosaur years), six-foot tall, purple Tyrannosaurus Rex with a green tummy in stuffed animal likeness, who comes to life through a child's imagination. He's always positive, but tends to a bit sensitive, though he's never really shown it. His theme song is "Barney Is a Dinosaur," which is sung to the tune of "Yankee Doodle". Barney often quotes things as being "Super dee-duper". Episodes frequently end with the song "I Love You", sung to the tune of "This Old Man", which happens to be one of Barney's favorite songs. Despite being a carnivorous type dinosaur, Barney likes many different foods such as fruits and vegetables, but his main favorite is a peanut butter and jelly sandwich. He also loves marching bands and parades. His three young dino friends are BJ, Baby Bop, and Riff.
Relation with the CMC and the Skarloey engines
Barney is also a close friend to the Cutie Mark Crusaders and Skarloey engines, with Barney by their side. They are always ready for his advice. And when the CMC feel down when Diamond Tiara and Silver Spoon insult them, Barney is there to make them feel better.
- Barney is also an imaginary friend for Chuckie Finster. Whenever Chuckie has a problem with something, Barney would sometimes appear and cheer him up.
- Barney made his first appearance with Winnie the Pooh and his friends in Winnie the Pooh vs Ghidrah the Three-Headed Monster.
- Barney along with Baby Bop & BJ will see Team Robot in Team Robot's Adventures of Barney's Imagination Island & Emerl's Adventures Of Barney in Outer Space
- Barney will join the Peanuts Gang in the first Peanuts crossover, Charlie Brown and Snoopy Join Lilo and Stitch.
- Barney, BJ, Baby Bop, and Riff will reveal how they met Pooh and the gang in Barney's Adventures of The Many Adventures of Winnie the Pooh.
- Barney will join Pooh and gang with Bj and Baby Bop in end of Pooh's Adventures of The Brady Bunch Movie.
- Barney will start his own adventures series in Barney's Adventures of Kermit's Swamp Years.
- According to his upcoming adventures series, he is the following things (maybe):
- Also, his best friends include Ronald McDonald, Papa Smurf, Nicholas St. North, and The Cat in the Hat.
- Barney will meet Sailor Moon and her friends in Sailor Moon's Adventures of Barney and the Backyard Gang.
- Barney is really good friends with Miss Frizzle, Ronald McDonald, and The Cat in the Hat, since they each take kids on magic trips to certain places.
- In Barney Goes to Cool World, he is mistaken by the citizens as a 3D doodle.
- Winnie the Pooh vs Ghidrah the Three-Headed Monster (first appearance)
- Pooh's Adventures of Little Manhattan
- some Winnie the Pooh/Sesame Street series (Winnie the Pooh and Abby in Wonderland (Sesame Street), and Winnie the Pooh and Elmo's Christmas Countdown)
- Winnie the Pooh Meets The Outsiders
- Pooh's Adventures of Frenemies
- Pooh's Adventures of Treehouse Hostage
- Pooh's Adventures of Grind
Charlie Brown and Snoopy's Adventures
- Charlie Brown and Snoopy Join Lilo and Stitch (first appearance)
- Charlie Brown and Snoopy's Adventures of Dream Along With Mickey
- Charlie Brown and Snoopy Get Home Alone (and its sequels)
- Charlie Brown and Snoopy's Adventures of Cast Away
- Charlie Brown and Snoopy Join The Muppets at Walt Disney World
- Charlie Brown and Snoopy Go to Rio
- Charlie Brown and Snoopy's Adventures of Wreck-It Ralph
- Peanuts/Recess films
- Peanuts/Cheaper by the Dozen films
- Charlie Brown and Snoopy Join Anastasia
- Charlie Brown and Snoopy's Adventures of The Parent Trap
- and more.