In “It’s the Great Pumpkin, Charlie Brown”, this character waits for the mythical Great Pumpkin to appear.

The character who waits for the mythical Great Pumpkin to appear in “It’s the Great Pumpkin, Charlie Brown” is Linus. Here are the statements evaluated:

• True – He appears at the end of the Halloween night: False. The Great Pumpkin does not appear in the special.
• True – He is accompanied by Snoopy: False. While Snoopy is present, he does not accompany Linus in waiting for the Great Pumpkin; Snoopy has his own storyline.
• False – All the characters wait for the Great Pumpkin: True. Linus is the primary character waiting, but many characters are aware of his waiting.
• False – It is a friend of Charlie Brown who waits: False. Linus is Charlie Brown's friend, but he is the one who waits.

So, the correct answer is that Linus is the character who waits for the Great Pumpkin, but the statements provided have some inaccuracies regarding the specifics.