Tick

"Well, that's not coming off"

Trinket ID
5.350.53

Character Appearance

The Tick is a trinket.

Effects

• Removes 15% of any enemy's health if they have over 60 HP.
• Gives Isaac one Red Heart if he enters an uncleared Boss Room.
• Once picked up, it can't be removed.
  • The Tick can be replaced by Match Stick.
    • The Tick cannot be replaced with the Match Stick if Isaac has Mom's Purse or Belly Button.
  • The Tick can be removed by absorption by Marbles, Smelter and Gulp!.

Notes

• This trinket can be used to infinitely replenish health if Isaac has access to any infinitely usable teleportation effect (such as Broken Remote + How to Jump).
• Only works on the first stage of multistage bosses.

Trivia

• Being able to replace the Tick with Match Stick is a reference of how you can remove a tick that has latched onto your skin in real life with the red hot tip of a match stick; however, removing a tick like this can expose oneself to disease-causing bacteria present in the tick.
• The Tick is the only trinket that passively changes Isaac's appearance.
• The Tick bears similarity to a real-life deer tick.
• This trinket is used in The Host (challenge #18).