Tarret (anagram of Garrett) - Kris

Michael - susie

Dayssic (anagram of Cassidy)/princess quest princess - Ralsei

Charlotte/puppet - Noelle

Elizabeth/Baby - Birdly

Tyke - Lancer

Dave miller - sans

Henry Emily - papyrus

Chipper - king

Doofas - jevil

Pilgrim from Pilgrims progress - seam

Coffee/coofie makhein - Roxls karrd

Handunit - queen

bonnet - tasque manager

Lol_17 (lolbit) - spamton

O.m.c. - gaster 

Amidude - the knight 

The mimic - the angel and roaring titans

Popgoes - tenna

Candy the cat - mike

Plus golden freddy - chapter 3 secret boss (FRIEND INSIDE ME)

The ignited demons - shadow men

Kitty from the crowd - the original

Starwalker 

Electrobab - nubert

Mendo, endoplush, yendo - sweetcap'ncakes

Various Funtime misc characters - addisons

Funtime Foxy - swatch

That bowser character from there is no pause button - k.round

Ballora - toriel

Lolzhax - annoying dog 

If it turns out that friend inside me is not woody(or plus golden freddy in the case of flawfrond)/Cheshire image_friend inside me theory - shadow bonnie

My name is David dad I want some ice cream (sorry, couldn't resist) - dess

More characters tbd