The gang is invited to a television studio in Los Angeles for Scooby's birthday, which is to be celebrated with a This is Your Life-style special. To Scooby’s happiness, he also reunites with Velma and Fred on the show, both of whom have gotten their own careers. However, a vengeful villain from Scooby’s past tries to ruin the night for him and the gang. Guest stars Frank Welker as Fred and Marla Frumkin as Velma

The gang is hired to interview the reclusive Norma Deathman, who lives with her monstrous servants. Since she is having a birthday party, the gang disguises themselves as caterers in order to gain entry to her house, but when Deathman realizes who the gang actually is, they have to run for their lives from her and her monsters.

When Shaggy takes a wrong turn, the gang end up at a mansion. Ratfield leaves the house after being fired and tells the gang to leave, too. They head in and find two bickering twins. Then, a mysterious, disembodied hand pesters the gang.

While on a cheap European tour, the gang stays at a hotel in Denmark where a group of sea demons is haunting. Things get even weirder when the ghost of Hamlet suddenly appears.

In Greece, Scooby, Scrappy, Shaggy and Daphne and a secret agent (taking the role of a café owner) head to find a missing professor and stop Thaddeus Blimp from turning al his enemies and the world leaders to stone.

Scooby and the gang try to stop a mastermind criminal from taking over the world by infiltrating his secret lair at the Statue of Liberty in New York City.

The gang heads to a honey farm, where giant bees are frightening the nearby town.

The Ghost of Ebenezer Overview has returned to haunt his hotel in the mountains. Can Scooby and the gang find out what is happening before the last two guests leave?

When a supervillain named Codefinger steals a top-secret decoding device and hides it in Pingley's Dept. store, the military recruits the gang to help them find it. They end up in a crazy situation when they talk secret code to the household appliances in the store.

In South America, the gang joins Velma’s uncle on an expedition in the Amazon rainforest while investigating a mystery involving ancient aliens. Guest stars Frank Welker as Fred and Marla Frumkin as Velma.

The gang visits a toy store where toys are coming alive everywhere.

The gang visits a research center in the South Pole, where a mad sea lion is terrorizing everyone.

On Halloween night, after being lured to the castle of Count Dracula, the gang must help a gaggle of real monsters take on an evil magician and a ghost before it’s too late. Guest stars Frank Welker as Fred and Marla Frumkin as Velma.

Velma invites the gang to a NASA banquet at the White House, but the ghosts of Presidents Abraham Lincoln, Teddy Roosevelt, Ulysses S. Grant and George Washington show up during the event and cause chaos. Guest stars Marla Frumkin as Velma.

Scooby and the gang visit Scooby’s relative Dooby Doo in Las Vegas.

Dixie Doo is being haunted by a Civil War ghost during a performance on her showboat, and Scooby and the gang try to help her.

Fred joins the gang in a mystery-solvers' contest at the home of Sherlock Holmes in London. While solving one of Sherlock Holmes’s old cases, the Ghost of Sherlock Holmes appears. But is his goal to assist the gang in solving the mystery, or frame them for a theft? Guest stars Frank Welker as Fred.

A cartoon villain named Monster Mutt jumps out of a TV and wreaks havoc.

While the gang goes on mysteries on a countryside at Old MacDonald’s E.I.E.I.O. (Experimental Institute for Evolutionary Improvement of Organisms). A genetic experiment on a field mouse making it a thirty-foot tall monster mouse and terrorize his farm.

A scrooge named Mr. Nickelby tries to close down a children's home so he can have it for himself. Meanwhile, a ghost is also haunting the children's home, just when Fred and the gang decorate for Christmas. Could these two things have any connection? Guest stars Frank Welker as Fred.