Answer: The Sorceress, Man-At-Arms, & Orko
Dense as he was, Ram-Man actually once pointed out that Prince Adam, and He-Man were never seen together by anyone. Also, Queen Marlena once hinted to Prince Adam that she knew his secret after she lead the Palace guards to rescue him, and the Royal family from Skeletor. The first person she freed was Prince Adam, because she figured that he "knew what to do", and that as a mother, she "knows her son".
From Quiz: He-Man and the Masters of the Universe
Answer: "Diamond Ray of Disappearance"
"Diamond Ray of Disappearance" is the official first episode. "The Cosmic Comet" was the first script to be accepted for production. Since different TV stations aired the episodes in different orders, some showed "The Dragon Invasion" as the first episode instead.
From Quiz: "He-Man" Classic Series
Answer: Earth
Queen Marlena was originally Marlena Glenn, an astronaut/pilot whose ship was thrown off course. She crash landed on Eternia and was found by a young King Randor. They fell in love, and were married, making her queen of Eternia.
From Quiz: He-Man and the Masters of the Universe
Answer: Merman
This was Merman's strongest episode.
From Quiz: "He-Man" Classic Series
Answer: White
After she was stripped of her powers by the evil wizard Kothos, Evil-Lyn traveled through the burning desert with Teela to find Kothos' lair. During that time, she took off her helmet, revealing her white hair.
From Quiz: He-Man and the Masters of the Universe
Answer: Eternia's past
Orko had to go to the past to retrieve the sword.
From Quiz: "He-Man" Classic Series
Answer: The Sorceress
As revealed to her by the Oracle of the Crystal Sea, Man-At-Arms found Teela in the nest of Zoar(the Sorceress in the form of a falcon). After an attack by Mer-Man, Zoar knew that she couldn't take care of Teela safely, so when Man-At-Arms found her, he adopted Teela as his own daughter.
From Quiz: He-Man and the Masters of the Universe
Answer: Trolla
Orko's Uncle Montork reports that Count Marzo owned a flower farm on Trolla.
From Quiz: "He-Man" Classic Series
Answer: Christmas
Along with his twin sister Adora, who would later become She-Ra: Princess Of Power.
From Quiz: He-Man and the Masters of the Universe
Answer: Beast Man
Man-E disguised himself as Beast Man in order to spy on the evil warriors.
From Quiz: "He-Man" Classic Series
Answer: Hordak
Skeletor was originally a member of the Horde, who at that time tried to take over Eternia, but were unsuccessful against the Palace guards, and the magic of Castle Grayskull. So, Hordak and Skeletor tried to kidnap both Adam, and Adora when they were infants, but were only half successful when Hordak kidnapped Adora, and was about to take Adam, but was stopped by Man-At-Arms. Hordak escaped with Adora, leaving Skeletor behind, and in turn, Skeletor betrayed Hordak by telling where the secret Horde hideout (later Snake Mountain) was. Hordak fled through a dimensional gate that led to Etheria.
From Quiz: He-Man and the Masters of the Universe
Answer: The dead man was really General Tataran of the Goblin Army in disguise
General Tataran had no heart and therefore no heartbeat, so when disguised as a human, his heartbeat could not be felt and he appeared to be dead.
From Quiz: "He-Man" Classic Series
Answer: A Goat, A Cricket, A Frog and A Golden Statue
Evil-Lyn, and Beast-Man snuck into the Royal Palace disguised as Majestra, a traveling magician, and King Randor, after the true King Randor disappeared during a magic trick involving a magic box. She managed to transform all of them, and then transported herself, Beast-Man, and the rest of them to Castle Grayskull. Skeletor created Faker, He-Man's evil doppelganger, who lured the Sorceress away from Castle Grayskull. Evil-Lyn used the Shaping Staff to trap the Sorceress in the form of a tree, but she managed to break the spell, and free He-Man, who then fought, and defeated Faker who charged at him, but ended up falling into the bottomless abyss that surrounds Castle Grayskull. He-Man defeated Skeletor, and restored everyone to normal by breaking the Shaping Staff in 2. Of course, Evil-Lyn tried to use the Staff, but the Staff backfired on her, by transforming her into a lizard, with bat wings.
From Quiz: He-Man and the Masters of the Universe
Answer: "The Arena"
"The Arena" was based on the Star Trek episode of that name, which was later emulated again by another He-Man episode, "The Games".
From Quiz: "He-Man" Classic Series
Answer: Let the power return
This is only seen once after Skeletor, and Gen. Tataran tricked He-Man into thinking that he had accidentally took a man's life.
From Quiz: He-Man and the Masters of the Universe
Answer: Earth
Marlena was an Earth astronaut who crash-landed on Eternia when her ship was sucked through a space portal.
From Quiz: "He-Man" Classic Series
Answer: Granamyr
Skeletor tried to take over Eternia by disguising himself as a nobleman in order to give the Weird of Crystal to King Randor. Man-At-Arms grabs the crystal once he recognized Skeletor's sword, and is transformed into a crystal statue.
He-Man, and Teela take Man-At-Arms to the Sorceress in hopes of restoring Man-At-Arms, but she doesn't have the knowledge to break the spell. She informs them to find Granamyr, the oldest, and wisest of the dragons of Darksmoke.
Granamyr tells He-Man that he would help, but only if He-Man brings him a gift:
Sky Tree. He-Man can't bring himself to chop down Sky Tree.
Impressed by He-Man's compassion, and wisdom, Granamyr gives He-Man, and Teela a book that contains the cure to restore Man-At-Arms.
From Quiz: He-Man and the Masters of the Universe
Answer: Compulsive lying
Squunge told so many tall tales that when he encountered the evil Slave Master in the forest, no-one would believe him.
From Quiz: "He-Man" Classic Series
Answer: "The Witch and the Warrior"
Evil-Lyn removes her helmet when stranded in the desert with Teela. She has short white hair underneath.
From Quiz: "He-Man" Classic Series
Answer: Two Bad and Modulok
This was the first episode in which Modulok was seen on Skeletor's side.
From Quiz: "He-Man" Classic Series
Answer: Fang-Man
Fang-Man seemed to have been left in the past at the end of this episode.
From Quiz: "He-Man" Classic Series
Answer: Mekaneck
Count Marzo was revealed to have captured Mekaneck's missing son, Philip, in the episode "Search for a Son".
From Quiz: "He-Man" Classic Series
