Baby Plum

Baby Plum is a boss added in The Binding of Isaac: Repentance that can appear in all environments of Chapter 1 (Basement, Cellar, Burning Basement). • Plum Flute - Allow Baby Plum to escape instead of defeating her.

• The copy of Baby Plum created by Vanishing Twin drops a random boss item if spared.

• Baby Plum may be the boss version of a Red Boom Fly.
• This is made more apparent due to the fact that she shares several room layouts with one.
• So far, Baby Plum is the only boss from Repentance to be added as one of Delirium's forms.
• There is an unused animation file next to Baby Plum's called "Derpy Plum" that has no associated sprites.
• There is an unused sprite called "plum_hint" that depicts a timer icon next to a Baby Plum with a heart, hinting at the fact that Baby Plum can be spared.
• It is found in the "backdrops" folder, which means it was most likely intended to be a floor or wall decoration.
• Baby Plum is one of only 3 bosses that can be spared, with the others being Bumbino and Hornfel.
• Coincidentally, they all made their debut in Repentance.
• Baby Plum's chasing behavior is reflected by her item equivalent, Fruity Plum, when it is following Isaac.
• According to the patch notes description for patch 1.7.9a, Baby Plum's death animation during normal runs will have a 0.0001% chance to use the explosion animations provided by G FUEL! [Check ingame], even if the item has not been encountered. The chance was 100% in the 1.7.9 patch before it.
• Baby Plum is female.
• Baby Plum is the only Non-Final Boss to have it's kills tracked on the Game Stats Menu