D

D may refer to:
 * Doppel, the Shapeshifter member of MON, who wrote the first threatening letter under the moniker "D".
 * Lala a Dullahan who is the second "D", who wrote the second, more poetic letter. When first asked she denied it and claims that she arrived to warn Kimihito Kurusu of his impending death.

Manga


File:DoppelLetter.png