Lego Adventurers is a Lego theme based on an early 20th century 'explorer' concept. The characters explore new areas, and go on adventures. Unlike other lego themes, which take place in a fictional "Lego Universe", most of the Adventurers sets takes places in real-world locations, such as Egypt, the Amazon rainforest, the Himalayas, India, and China. The only fictional sub-theme took place on an island where prehistoric creatures still lived. The theme was discontinued before Lego acquired the license for Indiana Jones, to which the theme had numerous similarities. The first subtheme starts off with Johnny and company in a 1930s type of Egypt. The main goal for Johnny is to explore the ancient egypt structures, and find the "Re-Gou ruby" before any of his enemies obtain it first. Johnny Thunder: The leading man in the Lego Adventurers line. He is Australian and is a daring, compassionate archaeologist. He sports a khaki shirt with a red bandanna, black legs, and a bush hat.
Dr. Charles Lightning: One of Johnny Thunder's companions on his epic adventures. He is a professor and is Johnny's uncle, but like a father figure to him. He sports a pith helmet, a white shirt with a red bow-tie, and green legs. He was later renamed "Dr. Kilroy". Gail Storm: The female companion of Johnny Thunder who is a budding journalist, recording all of the adventures. She sports a green jacket, red legs, and either a pith helmet or pilot helmet. She was later renamed "Pippin Reed". Harry Cane: A companion of Johnny Thunder who is an experienced pilot. He wears a pilot helmet with a brown leather jacket and black legs. Baron von Barron: Formerly Sam Sinister's best goon. The main villain in the Adventurers line, he seeks to take things he considers valuable, including trapping dinosaurs. He has a scarred face and sports a monocle, khaki shirt with holster, grey legs, epaulettes, and either a pith helmet, top hat, or pilot helmet. His left hand is a hook. He was later renamed "Lord Sam Sinister", which caused some confusion with the character of Sam Sinister (who disappeared from the Adventurers canon after the name change).
Sam Sinister: The boss of Baron von Barron. One of the main villains, he dresses entirely in black and is a representation of the archetypal "villain". He later went by the nickname "Slyboots". Minifigs: Baron von Barron, Sam Sinister, Dr. Kilroy, Skeleton, Harry Cane Minifigs: Dr. Kilroy, Pharaoh skeleton Minifigs: Sam Sinister, Pharaoh Hotep Animals: Red Snake, Black Scorpion Minifigs: Pharaoh skeleton, Baron von Barron, Johnny Thunder. Animals: 2 Yellow Birds, 2 Dark gray Birds, 2 Red Snakes, Black Scorpion. Animals: 2 Black Scorpions, Red Snake, Black Snake. Minifigs: Sam Sinister, Pharaoh skeleton, Johnny Thunder. Minifigs: Sam Sinister, Johnny Thunder, Pharaoh Hotep, Dr. Kilroy Minifigs: Gail Storm, Dr. Kilroy, Johnny Thunder, Pharaoh Hotep, Sam Sinister, Egypt skeleton, Baron von Barron. Animals: Red Snake, Black Scorpion. Minifigs: Johnny Thunder, Pharaoh Hotep, 3 Skeleton, Dr. Kilroy, Gail Storm, Sam Sinister, Baron von Barron, Harry Cane.
Animals: 5 Dark gray Birds, Black Scorpion, Dark gray Bat, Dark gray Crocodile, Black Snake, Red Snake. The crew must search deep into the Amazon Jungle in order to discover the ancient ruins where the powerful "Sun Disc" lies. But they first have to get past their new enemies and the tribal chief "Achu". Señor Palomar: The main antagonist of the Amazon Jungle theme. He was hired by Baron von Barron. Rudo Villano: Señor Palomar's closest criminal partner. The name is composed of the Spanish words rudo (mean) and villano (villain). Gabarro: A sailor who works for both the adventurers and a main villain Señor Palomar. Achu: A mysterious man in tribal clothing that is rumored to control the Amazon Jungle. Animals: Black Spider, Red Snake Minifigs: Skeleton, Gail Storm, Señor Palomar. Animals: 2 Black Spiders, Black Scorpion Minifigs: Rudo Villano, Dr. Kilroy, Johnny Thunder, Harry Cane Minifigs: Gabarros, Johnny Thunder, Dr. Kilroy, Rudo Villano, Señor Palomar, Skeleton, Achu.
Animals: Red Snake, Black Snake, Black Spider, Black Scorpion, Monkey, Parrot. Minifigs: Dr. Kilroy, Johnny Thunder, Gail Storm, 2 Skeletons, Señor Palomar, Achu, Rudo Villano, Gabarros. Animals: Black Snake, Red Snake, 2 Black Spiders, Black Scorpion, Black Bat, Green Crocodile The explorers discover a new mysterious island. In search of new adventure, the crew discovers that there is dinosaurs living on the island. They realize what fame they could have with this new discovery. so they start researching the prehistoric animals. Unfortunately, Johnnys old enemies come along to capture and steal the dinosaurs from him. Alexia Sinister: The sister of Lord Sam Sinister, who helps him with his latest plot against the trio. Mike: A young friend of Johnny Thunder who helps him out on Dino Island. Mr. Cunningham: A man who is not completely evil. He is somewhat overweight. Minifigs: Johnny Thunder, Dr. Kilroy Minifigs: Mr. Cunningham, Lord Sam Sinister, Alexia Sinister.
Animals: Triceratops, Stegosaurus, Green Baby T-Rex Minifigs: Mike, Johnny Thunder, Dr. Kilroy, Alexia Sinister, Lord Sam Sinister. Animals: Triceratops, Tyrannosaurus Rex, Green Baby T-Rex. Minifigs: Mike, Dr. Kilroy, Johnny Thunder, Pippin Read, Lord Sam Sinister, Mr. Cunningham. Animals: Light Gray Spider, Green Baby T-Rex, Tyrannosaurus Rex, Red Pteranodon, Stegosaurus, Black Scorpion, Black Spider, The adventurers travel east to find the "Golden Dragon of Marco Polo" in China. Along the way, the crew comes across many new allies, enemies, and artifacts in the Himalayas and India. Babloo: Babloo is trying to find the sunstone and save his village from the evil Maharaja Lallu. Maharajah Lallu: The maharajah is a ruthless tyrant who plans on using the sunstone to take over Babloo's village. Sangye Dorje: Sangye Dorje is a teenage sherpa with a lot of experience in the mountains. Ngan Pa: Ngan Pa is a greedy and ruthless yeti hunter. He is happy to help Lord Sinister for a share of the treasure hidden in the mountains.