|“||It was hard getting today off, you know?! And when I call you, you never answer, and when you do you just berate me and hang up! Why would you be so cruel?||”|
–Sullivan, Obsolete Dream (CHAPTER 4)
|Location||Pitch Black World|
|Affiliation||Pitch Black World|
Sullivan has medium-length dusty lime-green hair. His eyes, like Kurotsuno's, are bright yellow with black sclera. He wears a black suit and tie with black oxfords. His horns are similar to Kurotsuno's left horn. They form a sort of zigzag pattern and are gray with three black stripes on them.
Sullivan seems to be very childish at times. As shown in Chapter 4 of Obsolete Dream, he is quick to cry when Kurotsuno tells him to leave and when Glasses drags him away after being rejected by Kurotsuno herself.
It should be noted he continues to call Kurotsuno, "Olivia" despite her change in race. He is very loving towards his daughter, and he cries easily when she is cruel to him.
Not much is known about Sullivan's past. Notable is, however, that used to wear a red tie instead of a black one in the past.
- Mogeko Castle - Indirect cameo wherein he made a letter addressed to Olivia.
Obsolete Dream Cast
Kurotsuno is Sullivan's daughter whom he has bad relations with. He hopes one day she will understand how he feels.
Yagi is Sullivan's boss. He once forced him to drink alcohol against his will.
Glasses is Sullivan's underling.
Gyakuten and Chishibuki
They are not on good terms. Gyakuten and Chishibuki both like to torture Sullivan together.
- Visit Sullivan/Gallery to see the gallery.
- His name means "dark eyes" or "dark-eyed one."
- Sullivan made a brief cameo in Mogeko Castle. There is a letter that reads, "I wanted to say a final goodbye to my daughter... I'm sorry I've failed you as a father... I love you, Olivia... - Papa."
- He is stated to be a big crybaby and afraid of Mogekos.
- He bleeds easily and can turn into a crow. Chapter 4 of Obsolete Dream supports the two facts.
- He has asthma due to an ulcer, as his profile states. 
- He apparently doesn't like alcohol, specifically sake.
- From June 28 to August 3, 2017, Deep-Sea Prisoner hosted a character popularity poll that let each person vote three of their favorite characters. When the results came out on September 7, 2017, Sullivan was ranked 17th. 
"To whomever should read this letter:
By the time you read this, I am surely gone.
This castle is dangerous.
You must find some means of escape.
If you cannot escape this place, you will never elude the Mogekos...
They are persistent. Oddly, no matter where I hide, they're always come right for me.
Hide, and hide, and hide...
They always find me soon enough...
And I kill and kill them... but there's no end...
They come one after another.
.....This is no more than a hypothesis, but perhaps they are.....
It seems they're back again.
I know it's futile, but I will run.
While I can still move...
I wanted to say a final goodbye to my daughter...
I'm sorry I've failed as a father...
I love you, Olivia.....
– Letter found in Mogeko Castle
Obsolete Dream Characters
|Major||Hanten · Kurotsuno · Maekami · Met · Sullivan|
|Minor||Anten · Bis · Chishibuki · Chlomaki · Glasses · Gyakuten · Reina · Shikabone|
|Cameo||Chikemuri · Giltz · Lobco · Mikazki · Shizk · Silone · Sirius|
Mogeko Castle Characters
|Major||Defect Mogeko · King mogeko · Moge-ko · Mogeko · Shinya Kurai · Yonaka Kurai|
|Minor||Blood Spirit · Hashasky · Hasu · Met · Moffuru · Mogecuckoo · Mogekov Hashasky · Nega-Mogeko · Prosciutto Fairy · Somewhat Strange Mogeko|
|Cameo||Etihw · Froze · Hanten · Idate · Imika Yuhjima · Kcalb · Kurotsuno · Macarona · Mafuyu · Moge-kov · Nataka Kurokawa · Pancetta · Peraco · Rawberry Preserves · Rock · Rocma · Shirogane · Sunosan · Sullivan · Yosafire · Yukisada · Wadanohara|
Wadanohara and the Great Blue Sea
|Enemies · Items|
|Major||Dolpi · Fukami · Helica · Meikai · Memoca · Mikotsuhime · Pulmo · Samekichi · Syakesan · Tatsumiya · Totsusahime · Uomihime · Wadanohara|
|Minor||Adauchi · Aom · Aounabara · Artamos · Cherryblod · Chlomaki · Creamil · Doloz · Great Witch · Hofuru · Idate · Irena · Jiiya · Laurentia · Lobco · Met · Minero · Miyura · Nekoyama · Old · Rimorimo · Seguro · Sheep · Squid · Stella · Tarako · Tomoshibi · Totsusa Soldier · Tsuribari · Ver Million|
|Cameo||Amemiya · Benihotaru · Bloody Mary · Giltz · Gyakuten · Hanahata · Kaen · Kagimori · Maekami · Mogeko · Noir · Ptomain · Reley Lo · Rock · Sagan · Shiroame · Shiroma · Starlit Night · Sullivan · Syokamori · Tetsuzora · Tokinome · Touya · Tsumuri · Tuchikure · Yohira · Ziki|