Theoretical GD Difficulties

The one with / means they borderline with each other or people may have an opinion between the two. (Hard/Insane Demon could also mean Very Hard Demon)

'''!!NOTE!! - This ranks depending on the estimation of people's normal human to god skill level from the present-day. Things were generally harder in the past, especially in Touhou's case.'''

Some cannot not be included on this list because they can't be judged if their difficulty is in a learning curve.

Hardest Demons in the RP: Russell Kenos, Anathema Sisters, One Punch Man, Kukuri, Golden.

Ultra Robo Story Villians/Bosses (Former ones included):

The Nightmare&The Execution - Insane Demon

Volcano Monster - Easy Demon

Phantom David - Insane/Extreme Demon (Insane Demon in normal form)

Muncher Man (Alter Ego Dracula) - Medium/Extreme Demon (Inconsistency)

Illeehz/Dark Samin - Extreme Demon

Gleelily&Toturan (Dark) - Extreme Demon (Borderline Impossible Formerly)

Parr - Extreme Demon (Formerly Near-Impossible)

Insunferna - Medium Demon

Russell Kenos - IMPOSSIBLE DEMON

Jester Krila - Insane

Pudivul - Medium Demon

Iridescent Drone - Hard Demon

Allegiance Kiriko - Insane/Extreme Demon

Sunset Sandstorm God - Extreme Demon (Memory-Based)

Deimos Goddess - Extreme Demon

Stan - Extreme Demon (Behind Illeehz) *Second Hardest for Re:Zero people*

Wasureta - Extreme Demon (Around both Koishi and Satori level combined)

Jagger - Medium Demon

Justice - Insane Demon

Phantasm Arthur - Insane/Extreme Demon

(Moon Thief) - Insane Demon

Renevant - Extreme Demon (! - Can rebound death through a scream)

Kukuri Hizumi - Extreme Demon (High-End Yangire Rena/Monika Alter Ego behind One-Punch Man in difficulty)

Anathema - Borderline Impossible Demon (! - Ability to re-write logic)

Ace Attorney

[Dual Destinies]

Ted Tonate - Insane

Florent L'Belle - Easy/Medium Demon

Aristotle Means - Medium Demon

The Phantom - Medium/Hard Demon

[Spirit of Justice]

Ga'ran Sigatar Khura'in - Hard/Insane Demon (Formerly)

Touhou *Up to Lunatic in person*

[Touhou 1] Hard Demon-only. Sariel might be Hard/Insane Demon.

[Touhou 6]

Rumia - Hard/Insane Demon

Daiyousei - Medium/Hard Demon (Easiest target in Touhou 6)

Cirno - Hard/Insane Demon *More varied opinion on this one*

Hong Meiling - Hard Demon (One of the easier targets)

Koakuma - Hard Demon?

Patchouli Knowledge - Insane Demon

Sakuya Izayoi - Insane/Extreme Demon

Remilia Scarlet - Insane/Extreme Demon

Flandre Scarlet - Extreme Demon (Hardest target in Touhou 6)

[Touhou 7]

Letty Whiterock - ???

Chen - ???

Alice Margatroid - Insane Demon (Maybe Extreme Demon if true strength is shown)

Yukari Yakumo - Extreme Demon (Hardest Demon if not one of the hardest in Touhou) 

[Watatsuki no Toyohime around the same difficulty]

[Touhou 8]

Wriggle Nightbug - Hard Demon (One of the easier targets)

Mystia Lorelei - Insane Demon

Keine Kamishirasawa - Insane Demon (Full-on Extreme Demon in Extra Stage Hakutaku Form)

^The one who I'm terrified with^

Tewi Inaba - ???

Reisen Udongein Inaba - Insane/Extreme Demon

Eirin Yagokoro - Insane/Extreme Demon

Kaguya Houraisan - Extreme Demon

Fujiwara no Mokou - Extreme Demon

[Touhou 10]

Suwako Moriya - Extreme Demon

[Touhou 11]

Yamame Kurodani - ???

Parsee Mizuhashi - ???

Yuugi Hoshiguma - ???

Satori Komeiji - Extreme Demon

Utsuho Reiuji - Insane/Extreme Demon

^Another one who I'm terrified with^

Koishi Komeiji - Extreme Demon

[Touhou 12]

Nazrin - Hard Demon (One of the easier targets)

Kogasa Tatara - Hard Demon (One of the easier targets)

Ichirin Kumoi - Hard/Insane Demon?

Minamitsu Murasa - Hard/Insane Demon

Shou Toramaru - Insane Demon?

[Touhou 14]

Seija Kijin - Insane Demon

[Touhou Protagonists?]

Reimu - Insane Demon/Extreme Demon

Marisa - Insane Demon

[Star Wars]

Yoda - Extreme Demon

[Re:Zero]

Elsa Granhier - Extreme Demon

Felt - Insane/Extreme Demon

Emilia - Extreme Demon (Puck is included)

Reinhard van Astrea - Extreme Demon

Rem - Insane/Extreme Demon (Full-on Extreme Demon with Horn)

Beatrice - Insane/Extreme Demon

Ram - Insane Demon (Former Extreme)

Julius Juukulius - Extreme Demon

Subaru Natsuki - Unrated

Petelgeuse Romanee-Conti - Extreme Demon

White Whale - Extreme Demon (Hardest Demon of the anime)

Crusch Karsten - Extreme Demon

Wilhelm van Astrea - Extreme Demon (Former Insane Demon)

[100% OJ] - Between Hard Demon and Insane Demon at best. (With Sweebo and Suguri 46B being the only Insane/Extreme Demons)

[Nintendo]

Mario - Medium/Hard Demon

Bowser - Hard Demon

Kirby - Extreme Demon (Former Insane Demon)

[Street Fighter] - Likely Medium or Hard Demon.

[Mega Man] - Between Insane and Medium Demon. (Up to Hard Demon for the X series.)

[Castlevania] - Medium or Hard Demon.

[Persona 5] - Likely Extreme Demon-Only

[Lucky Star] - Between Harder and Insane

[Undertale]

Toriel - Easy Demon

Papyrus - Insane

Undyne - Easy/Medium Demon (Medium Demon in Undying Form)

Mettaton - Easy Demon

Asgore - Easy/Medium Demon

Sans - Hard Demon

[Deltarune]

Rouxls Kaard - Easy

Lancer - Insane

Susie - Medium Demon

Chaos King - Easy/Medium Demon

[Inverted Fate]

Asgore - Easy Demon

Sans - Easy-Hard Demon

Alphys - Medium Demon

Mettaton - Easy-Hard Demon

Undyne - Hard Demon/Insane Demon

Toriel - Medium Demon

[Storyshift]

Undyne ULTRA - Hard Demon (Memory)

[Undershuffle]

Sans - Medium/Hard Demon (Mostly the latter during Genocide)

[Chrono Trigger] - Hard Demon

[Chrono Cross] - Insane Demon

[Xenoblade Chronicles] - Insane to Extreme Demon

[Neptunia] - Insane to Low-Mid Extreme Demon.

[When They Cry]

Rena Ryuugu - Insane/Extreme Demon *More varied opinion on this one* (Hardest demon of the anime?)

Mion Sonozaki - Medium/Hard Demon?

[Date A Live]

Kurumi Tokisaki - Extreme Demon

[Shinryaku! Ika Musume]

Ika Musume - Easy Demon

Chizuru Aizawa - Medium/Hard Demon

(Misc)

The Magic School Bus - Easy Demon

Indiana Jones - Medium/Hard Demon