Marvel's Loki logo fonts

ARB 85 Poster Script JAN-39  Suggested by IceWarrior04 
Old English  Suggested by marty666 


Cloister Black  Suggested by Sneggleblech 
Dameron  Suggested by IceWarrior04 
Terminator Real NFI  Suggested by nuppy_design 
Queen of Camelot  Suggested by Kubinskiy7 

The 'K'

The 'L' could be a lot of different fonts, perhaps Dameron Condensed

The 'O' is definitely custom, and the 'I' could be as well

O and l

The O and the I are from Cloister Black, actually the "I" is the lowercase l from Cloister Black.

The closest font for L is Terminator

"L" looks like this font