There are guards like the ones in The Island of Lost Treasure, there was a blue, orange, and yellow giggling guard and they were big, giggle, bigger, giggler, and biggest and gigglest.
The title card for this episode has some lowercase text in the part, "The Green Queen".
Victoria returns again since the first Super Wheels episode.
When Blaze, Darington, and Watts destroyed the queen's Green Machines, they turn to smoke like how Crusher's inventions do sometimes.
The same happened to the Giant Laser Bot.
When the Green Queen sees the water tower at the construction site, she says it's aquamarine. Apparently, the shade for aquamarine (#7FFFD4) is a shade of green, but with some blue added to it.
When Darington goes in the Laser Bot, it looks bigger on the inside, compared to what the bot looks like on the outside.
The Green Queen turning everything and everyone into green.
The Green Queen complaining about other colors she hate, while putting them into complaints that rhymes.
The Green Queen crashing into something green, causing her to spin.
Crusher/Pickle admiring things that are their usual color before it changes to green, all thanks to the Green Queen.
Goofs[]
When Darington goes inside the Giant Green Laser Bot, the shape tunnels inside the bot are colors that are not green.
This is probably because the animators want the colors of the shapes to stand out against the green. Also, there may be viewers who are also color-blind.