Howler Leeches

From the Angry Beavers episode "Omega Beaver," Daggett believes the world is being invaded by Howler Leeches after reading a comic book (it's 100% 37% true!). Evidently, the invasion consists of three phases:
First, the Leeches cause an Ice Age; Second, they land on Earth in atomic, blood-powered spacecraft; Third, the Leeches devour all life, which take 35 years to fully digest.

The Howler Leeches are coming

Send more money, I'll send more stuff!

Daggett's brother Norbert and some of their friends decide to pull a prank and dresses up as Howler Leeches to scare Daggett. Their costumes are wonderfully terrible, consisting of just a black sleeping bag which doesn't cover their faces.

Daggett assumes his friends have been eaten and are slowly digesting. How delightfully clever!

The comic company offers Daggett help by way of special offers --utter junk that doesn't at all do anything-- such as "attack robot beavers" (mops with bits of twisted wire), stale chewing gum, and a rabid dog. While an absolute scam, the company accepts poorly drawn fake money.

As it turns out, Howler Leeches are real, and they have a real wicked design. Hard to see in the screen-grab, but the Leeches have a secondary jaw similar to Giger's Xenomorph, which is what they use to talk (I assume it's a second jaw, for all we know it's a recent meal's!). In an interesting twist, they attempt to keep the rabid dog as a pet.

I love how the fake Howler Leeches look nothing like the real ones. Both designs are fantastic in their own way.

The atomic, blood-propelled UFO the Howler Leeches use is also nifty:

I wonder where they get the blood to propel the UFO.