All In Vein/Trivia

Trivia

 * This marks a rare instance of Mondo releasing more than one internet season 3 Happy Tree Friends episode in less than a month. This and the previous episode were both released in October.
 * This happened again a year later with the episodes Pet Peeve and A Vicious Cycle, respectively.
 * This is the first Halloween episode where Lumpy dies.
 * This is the second time that Giggles is listed as missing on the side of a milk carton. The first time was in Junk in the Trunk.
 * Coincidentally, Lumpy is responsible for both of her disappearances.
 * This episode confirms Truffles and Lammy's first deaths.
 * This is so far the only internet episode to have a scrolling credits roll. Usually only TV episodes have this.
 * The feauturing characters in this episode make up three out of the four characters who appear in Cold Hearted and the appearing characters (not counting Petunia) are the same characters who were apart of Vote or Die.
 * This is one of the few episodes to show Lumpy not living in his trailer.
 * This is the third episode to depict Lumpy as a mythical being. Previously he was a giant and a genie.
 * Just like other Halloween episodes like Peas in a Pod and Without a Hitch, this episode uses an opening card in the style of a horror movie poster.
 * This is the second episode where Lumpy sits in a car driven by The Mole, the first being Blind Date.
 * The background during the opening (before the episode title and during the credits) is the red version of the Happy Tree Friends 3rd season intro background.
 * Nobody survives in this episode.
 * This is one of the few episodes where everyone dies.
 * The paper ghost's wailing is heard once again in this episode.
 * S3E21 You Love Happy Tree Friends.png the episode is paused at just the right moment when the hypnotizing swirl engulfs the screen, the text "You love Happy Tree Friends" can be seen. But you have to be quick, as the text flashes for only a split second.
 * This is the forth time a character is overweight. The others times are Ipso Fatso, Take a Hike, and Icy You.
 * This is the first time that The Mole expresses sadness.
 * This is the second time that The Mole is decapitated. The first was in Home Is Where the Hurt Is.
 * The music pieces used in the intro and credits are the same ones used in Without a Hitch.
 * This is one of the many episodes where a character makes "Puppy eyes". The other instances are Lumpy in Class Act, Toothy in Better Off Bread, Lumpy and Russell in Get Whale Soon, Petunia, Giggles, Lumpy in Stealing the Spotlight, Flaky in Ski Ya, Wouldn't Wanna Be Ya!, Lumpy in In a Jam, Lifty in Easy For You to Sleigh, Lumpy in Letter Late than Never, Fliqpy in Hear Today, Gone Tomorrow, Sniffles in Wrath of Con, Nutty in Icy You, and Lumpy in Aw, Shucks!.
 * Ellen Connell's voice was sampled for Giggles in this episode.
 * This marks the third time one or more characters died due to the sun. The others are Flippy, Handy, and Sniffles in Happy Trails Pt. 2: Jumping the Shark and Toothy in Easy Comb, Easy Go.
 * This is the only season 3 episode that Lammy and Mr. Pickels appear in without Flaky.
 * This is the first time a secret message is shown before the credits.
 * To date, this is the most recent episode with no surviving characters, if you count Truffles' cameos as appearances.
 * This is the only episode to date where Mr. Pickels dies. (Debatable)
 * This is the second time that Mr. Pickels doesn't come to life (the first being The Chokes on You). This happens again in You're Kraken Me Up, All Work and No Play and Spare Tire.

Cultural References

 * As expected, this episode is based on Dracula.
 * Before the credits play, there are a couple parodies of real life products. The first one was for Lumpy Luncheon Meat, which is a parody of Spam, and the other one shows Petunia on a container of salt called "Happy Tree Friends Salt", which is a parody of Morton Salt.
 * On the container of salt, the text "When in pain, it's sore!" can be seen. This is a reference to Morton Salt's slogan "When it rains, it pours".
 * The moral is a reference to the blood type B Positive (since Lumpy is a vampire).

Superlatives

 * The Mole's death in this episode is similar to Disco Bear's death from Ipso Fatso.
 * Giggles, Lammy and Truffles' deaths are similar to Cub's death in Read 'em and Weep.
 * Lumpy's death is similar to Petunia's death in Royal Flush.