Moria
by Jeff
Image text: Someone should really bring them a ladder and remind them to build the Endless Stair *first* next time.
This is a Lord of the Rings reference and the character with the beard and hat is Gandalf. The four shorter characters are the hobbits that were also members of the Fellowship of the Ring. The comic is making a joke on the fact that if the dwarves dug too deeply, then they just were unable to get out.
Single Ladies
by Jeff
Image text: Using a ring to bind someone you covet into your dark and twisted world? Wow, just got the subtext there. Also, the apparently eager Beyoncé would've made one badass Nazgȗl.
The song playing in this comic is "Single Ladies" by Beyonce. Which apparently had one of the best videos of all time... Anyhow, Gil-Galad was the last high king of the Noldor in Middle Earth. Galadriel was a queen of the elves in Middle Earth. Eru was the one god of Middle-Earth who created the Elves and Men, and Aule created the Dwarves, but Eru eventually approved Aule's creations. So, he sort of created the Dwarves as Eru was the only god to give a spirit to a being, as he did with the Dwarves.
The character in the beret is apparently the bartender in a bar that Sauron frequents. In the comic, Sauron upon hearing the song by Beyonce in the bar, has the idea to create his magic ring plan which presents the plot of the Lord of the Rings triology of books and movies.