The Frail

Boss

Defeat ??? as 3 different characters

The Frail is a boss added in Afterbirth that can appear in all environments of Chapter 2. It is the posthumous version of Pin.

Behavior[edit | edit source]

In the first phase, he has 100 HP like Pin, and The Frail's attacks are identical to Pin’s as well. However, the Frail moves faster.
Upon running out of health, The Frail becomes skeletal, beginning the second phase, in which The Frail has 200 HP and uses three different attacks:
- Jumps out of the ground at Isaac, firing four projectiles from the last section of its body that each split into four more projectiles which travel either diagonally or straight.
- Sticks its head out of the ground, then fires a rotating Brimstone laser at Isaac.
  - Alternatively, he will turn to Isaac to fire a quick, non-moving Brimstone laser 2 times before stopping.
- Sticks its tail out of the ground, then fires a burst of spectral tears in all directions which leave small puddles of slowing White Creep where they land.

Despite The Frail being an invertebrate, or an animal lacking a skeleton of bones, its second phase is skeletal.
The definition of the word frail is weak and delicate, which explains its rotting body and depressed look in The Frail's first phase.
The main body of The Frail's VS. portrait is heavily based off of Larry Jr.'s VS. portrait.
The Black Champion's behavior of starting from the second phase might be a bug since this version of the boss is set to have 30% more HP (260) in its first phase. Spawning the black champion via the Debug Console allows you to see a glimpse of the boss in its first phase, but then it's instantly replaced with the second phase, ignoring the amount of HP set in the game files.
The Frail can be found in The Void, even before being unlocked.

Bug!

If The Frail is under the effects of

in mid-air, its jump will be stopped and it will fall.

Bosses
Chapter 1	Gemini • Steven • Blighted Ovum • Dingle • The Duke of Flies • Famine • Fistula • Gurglings • The Haunt • Larry Jr. • Monstro • Pin • Widow • The Fallen • The Headless Horseman Dangle • Little Horn • Rag Man • Turdlings
Chapter 2	Chub • C.H.A.D. • Carrion Queen • Dark One • Gurdy • Gurdy Jr. • The Hollow • The Husk • Mega Fatty • Mega Maw • Peep • Pestilence • Polycephalus • The Wretched • The Fallen • The Headless Horseman The Forsaken • The Frail • The Stain Big Horn • Rag Mega
Chapter 3	The Adversary • The Bloat • The Cage • The Gate • Monstro II • Gish • Loki • Mask of Infamy • War • The Fallen • The Headless Horseman • Mom Brownie Sisters Vis
Chapter 4	Blastocyst • The Bloat • Conquest • Daddy Long Legs • Triachnid • Death • Lokii • Mama Gurdy • Mr. Fred • Scolex • Teratoma • The Fallen • The Headless Horseman • Mom's Heart • It Lives Sisters Vis • The Matriarch
Blue Womb	Hush
Chapter 5	Satan • Isaac
Chapter 6	??? • The Lamb • Mega Satan
The Void	Delirium
Greed Mode	Ultra Greed Ultra Greedier