Well really it's Specimen 9 from Spooky's Jumpscare Mansion, which Haste is very heavily based on. That's Specimen 9's catchphrase, while Haste's is "NO TIME"
I was comparing this entity to Specimen 9 and not Haste.
Time related ❌️
Only 2 eyes ❌️
Puts up text on your screen before it kills you ❌️
Just 1 row of teeth on the top and bottom ❌️
Has a neck and/or a body at any point in the game ❌️
In doors not all entities kill you
In rooms I think every one is lethal tho
In doors there's like 5 which don't instakill you, with one doing no damage at all