Howard Phillips Lovecraft

Howard Phillips Lovecraft (ハワード・フィリップス・ラヴクラフト,) was a member of The Guild.

Personality
Howard appears to be a fairly odd person, for example, as he and John Steinbeck were chasing after the Armed Detective Companies Clerk's he was seen counting the wood grains before being told they weren't real. He also appears to be fairly non-chalant to battle, as he apparently fell asleep after being shot in the back by Kunikida.

After the war, is oddness shows itself even more. As, he states in Chapter 37 that since his Contract with Fitzgerald is null that he'll be going to sleep, and thus he walks into the ocean.

Ability
The Great Old Ones (旧支配者,) is an ability that allows Lovecraft to transform either a part or his whole body into a monster with lots of tentacles. And in this state, he is only vulnerable from the inside. In addition, even after being destroyed from the inside by Chuya and Dazai, he eventually regenerates.

It is later known that The Great Old Ones is not an ability as Dazai is unable to nullify it.

Trivia

 * His ability, The Great Old Ones is a reference to Cthulhu's origins, a 'Great Old One' is a God of extra-dimensional origins.
 * The Great Old Ones is not an ability.
 * It is heavily implied by his dialogue about a "contract" with Francis Scott Key Fitzgerald that he actually is the "Great Old One" he transforms into, particularly due to him disappearing into the sea at the end of the Three-way War arc.