Season 4
Season 4 of Disney’s Adventures of the Gummi Bears (1988) is widely considered the show's "expansion" season. It shifts the focus from the isolated life in Gummi Glen to a much larger world, introducing a new tribe of Gummis and the legendary city of Ursalia.
episodes
A traveler from the Orient searches out the Gummi Bears to honor an ancient pact of friendship and help concerning a dragon.
Duke Igthorn gets a magic bagpipe that hypnotizes whoever hears its music.
Sunni enters a costume contest in Dunwyn during folly day.
A ghost of a Gummi knight leads Cubbi on a quest.
Grammi is visited by a childhood friend, Nogum.
Sunni wants to find a new place to live but finds that Gummi Glen is the best home for a Gummi Bear.
Cavin becomes a great painter with a LOT of help from Gusto.
Sir Gawain (Cavin's grandpa) tries to prove Gummies exist to win a bet.
Cubbi and Tummi find a ancient Gummi training center and Tummi takes a crash course.
Toadie impersonates the Crimson Avenger and learns what it means to be a hero.
An accidental mixture of Gummiberry juice and baby powder reduces Igthorn's Ogre troops to infants, and Grammi takes in one of these babies to raise it for the better.
Dunwyn's most famous paladin, Sir Victor, pays a visit to King Gregor's court. But the White Knight bears a secret which makes him an easy target for extortion by Igthorn.
When Gruffi breaks his foot, he stubbornly refuses to stay put, believing that the Glen would suffer if he doesn't remain active. His attitude doesn't improve when a rowdy bandit gang decides to make camp--right above the Gummi Glen abode.
King Gregor proposes a series of tests for Unwin and the other squires to become Princess Calla's bodyguard, which includes stealing a golden apple from the strong and mysterious Black Knight. Calla conceals her appearance in a suit of armor and competes as well to prove she is capable of her own self defense.
Inspired by some old stories, Cubby constructs a flight pack and races off into the clouds to find the legendary Aerials. Unfortunately, the Aerials are not like the old Gummi stories described, in more than one way.
Tummi finds a Gummarine, an ancient seagoing vessel that can take the Gummies to New Gumbria, where they can meet other Gummies. However, their plans are quickly derailed when Duke Igthorn captures the ship and uses it to attack King Gregor.