Ravendark refers to Skullmaster as Loki who is the Norse god of mischief.
Thor's hammer is supposed to magically return to his hand after being thrown. It noticeably does not when Norman chucks it into the ocean.
Virgil: Very good, Norman. I believe he wishes to kill you again.
Norman: Thank you, Odin!
Max: Norm, you know this guy?
Norman: Fought him before. They even wrote a song about it.
Max: What? Puff, the Magic Dragon?
(Norman dodges an attack from the Doom Dragon)
Norman: Slow as ever, ungainly beast. (dodges another attack) Slow and stupid!
Doom Dragon: Thunderer, Thunderer, Thunderer. Would you test your metal on me, again? What do they call you now? Lancelot? Little John?
(A Thunderbolt strikes in the background)
Norman: (voice starts off with fierce power, but then tapers off) They call me... Norman.
(Max enters a grocery store with Virgil and Ravendark)
Store Clerk: Hey! No pets allowed in the store!
Max: Oh, chill dude, will you? These are my seeing eye birds. I can't make intelligent purchases without them, okay?
Norman: The hammer and helmet of Thor! I thought I'd had lost these forever. Still fits.
Max: Wait a minute. You were Thor?!
Norman: Yes, I served Odin.
Max: Oh, maybe I'll just wait here until the end of the world.
Virgil's means of summoning: A grocery clerk announcing the store specials and ending with Virgil's message. The message was "Mighty Max! Please go to isle seven, frozen foods." A portal is located in a produce freezer in isle seven.
Educational Epilogue: Norway
It is revealed in this episode that long ago, Norman was Thor, the thunder god of Norse Mythology.
Norman is also revealed to have been Little John and Sir Lancelot in this episode.
Title: Let Sleeping Dragons Lie!
The title of this episode is a play on the phrase, "Let Sleeping Dogs Lie."
Max mentions "Puff the Magic Dragon", which was a popular song by Peter, Paul and Mary.