Star and Marco turn into amateur sleuths to find who tried to turn Eclipsa to stone.
- 0% Approval Rating: It's made painstakingly clear that Eclipsa is detested by the Mewmans for her Pro-Monster reforms, but she is just as disliked by a lot of monsters, thanks to the actions of some of her staff like Manfred when they deliberately disobey or misinterpret her orders. Even when she pardons all her suspected assailants, a good number of them accuse her of only doing it to make herself look better.
- Accidental Hero: Manfred's bigotry and spite are what saved Eclipsa from petrification.
- Affably Evil: You'd be forgiven for not remembering that Babs is an assassin given her pleasant disposition.
- The Bus Came Back: Rasticore shows up at the Assassin's Guild, and gives Star information on Babs so she'll leave him alone, as he's embarrassed by how he's still rather short due to his regeneration process.
- Curse Cut Short: After Sherry drinks juice made from the berries, she says "Tell Eclipsa she can Yada-Yada my-" before turning to stone, and her position makes it obvious how that sentence was supposed to end.
- Cyanide Pill: Played with. Sherry drinks Yada Yada Berry Juice in order to take her secrets to her grave. Whether Yada-Yada wears off when it's juiced remains a mystery.
- Deadly Euphemism: Yada-Yada berries are so named because "You feed them to someone and... yada-yada. They never bother you again." Thereafter, "yada-yada" is repeatedly used as a verb meaning "to turn someone to stone". This despite the Eclipsa's claim that they'll just wear off. "Cornonation" reveals that Eclipsa was right, as Manfred is no longer stone.
- Equal-Opportunity Evil: The Assassin's Guild seems to be employing both monsters and mewmans.
- Good Cop/Bad Cop: Star and Marco go around interrogating potential culprits, with Star as the bad cop and Marco as the good cop.
- Healing Factor: Glossaryck also turns to stone when he eats Yada-Yada berries, but unlike the other victims, he regenerates instantly. This allows him to continue eating the berries, which he enjoys.
- Laser-Guided Karma: Considering how Manfred deliberately serves the monster's food in dogfood bowls and eat on the floor, as opposed to following Eclipsa's orders, it's kinda hard to feel sorry for him when he tastes the yada yada berries and gets turned into stone.
- Misplaced Retribution: Manfred rather maliciously misinterpreted Eclipsa's orders to serve the monsters by feeding them out of dogfood bowls. One of the monsters sincerely holds Eclipsa accountable, even when it's explained it wasn't her idea, and tries to turn her to stone just for that.
- No-Sell: Glossaryk, being magical is the only being who can consume yada-yada berries safely.
- Tampering with Food and Drink: Someone put yada-yada berries in Eclipsa's oatmeal in an attempt to turn her to stone.
- Taken for Granite: Yada-Yada berries turn whoever ingests them into stone, and are sold by Apothecary Sherry to anyone interested in trying to assassinate Eclipsa. While they're allegedly temporary, as Eclipsa notes Manfred will be back to normal eventually after eating some, Sherry drinking a glass of Yada-Yada juice is treated as her being Driven to Suicide. Glossaryck actually likes the taste of them and breaks himself free from the effects immediately after they affect him.
- There Should Be a Law: Apothecary Sherry admits that it probably shouldn't be legal to sell yada yada berries, which have no purpose besides turning people to stone.
- The Unreveal: No one ever finds out who put the berries in Eclipsa's food to turn her to stone, just that a lot of people have tried to, and would not have regretted it.
- Weird Trade Union: Assassin's Guild Local 839. A sign spinner offers a two-for-one special.