Bolded are losses, italics are wins.
Lunar2 Zophar- Has the right damage type to give Izanami trouble and he's faster. I don't think she has enough time to slug her way out of danger.
BoFs Myria Myria 1 really, really loathes Deabilite and Izanami's physical resistance.
BoF4 Fou-Lu- Dark Wave should shred her. Fou-Lu's got a slight durability edge and his damage is too good otherwise.
SH3 Lady- Lady damage.
Lunars Ghaleon- This came up in Cmdr's old touranment back in the day. Chaos shield slows down anything Mind Charge can do and Hell Wave ignores her defenses.
G3 Xorn- I have no earthly idea.
BoF3 Ryu- Mmm yes going after Ryu3 ends well. Ryu3 bonebreaks past her Galgalim eyes danger range.
FF7 Sephiroth- Seph really does not like dispel+Damage combos at all.
DDS Jenna Angel- Donno. Probably Jenna.
SoA Piastol- High defense+magic offense gives Piastol problems.
BoF1 Jade- Thunder resistances+Deabilitate screwing over Jade's offense bad.
FF6 Kefka- Think Izanami can blow past the Hyperdrive range, but not too sure.
DDS Heat- Donno.
SHs Yuri Volte Hyuga- Too much status for Yuri to handle.
FFX Yuna- Hay guys I'm a goddess *ANIMA TO THE FACE*
VP1 Loki- It's Loki.
G2 Melfice- Debilitate+Defense is plenty.
Lunar2 False Althena- FA has non thunder damage that works well enough. FA's own durability lets her stay afloat until then.
XS1 Luis Virgil- Good fight, but the raw HP difference should cover for Virgil's good evasion.
G3 Emelious de Pamela- See Melfice.
PS4 Profound Darkness- Too many forms and too much damage.
MK Isolde Schelling- NE magic. Izanami gets overwhelmed before she can get going.
Saga TimeLord- TL can annoy the ever loving hell out of her by killing her speed, but that's about it.
Pers4 Souji Seta- Ends about as well as it does in game for Izanami. Souji has the damage and durability to kill her. Heat Riser+Debiliate makes her offense a bad joke and he can just blitz her danger range in the final form.
CT Lavos- I think?
SO2 Indalecio- Not enough HP.
Pers Ellen Kirishima- Status.
PKMN Mewtwo- Way too much pressure on the Kitty's resources offhand with the HP-1 stuff.
G3 Violetta- Physical spoiler.
PKMN Kyogre- Status.
Pers Nate Nanjo- Status.
LoL2 Avalon- Avalon's at least even on durability and he has the advantage in damage.
TotA Vandesdelca Musto Fende
DQ8 Empyrea- Doubt Empy's HP holds out.
BoF4 Ryu- Izanami is owned by Stardrop. Fail.
FF9 Kuja- Yeah.
S2 Luca Blight- Think the stat downs are enough.
XG Citan Uzuki (Hyuga Ricdeau)
FF1 Chaos- Nuke ignores her defenses, and a single shot of Cure 4 gives him extra time. On the other hand, Izanami has NE magic which is never Chaos's friend. I think he just runs out of HP even with the shot of cure 4. If he could theoric ally delay a second shot of cure 4 (I'd let him reuse it once every eight rounds) maybe but eh.
S3 Chris Lightfellow
FFT Orlandu, Cidolfas
PS4 Rika- Status
FF6 Terra Branford- Status, I think .
VPs Brahms- I don't think she one rounds Brahms and she goes second. Bye!
WA Cecilia Lyne Adelhyde- I have no idea. Pass for now.
AtLC Elc- Divide is light elemental IIRC, so it's out. He needs that up and running to have a chance here.
BoF5 Deamoned- Walled.
S4 Ted- Walled.
SoA Ramirez
DQ8 Guv- I don't give Guv CT.
Lunar1 Royce-Royce lacks the needed magic.
XS2 Patriarch Sergius XVII- He loses to the freaking Mist Dragon. IZanami shares that holy immuning, so yeah.
Disgaea2 Zenon- High level NE magic. Zenon's better than I thought. Izanami may just outslug him thanks to HP but I'm leaning the other way.
FF4 Rubicant- Ice magic. Rubi can throw up his cape but then gets horribly outslugged.
FFX Seymour
Suikos Tir McDohl
WA4 Belial- Izanami is MT focused.
AtLC Arc Eda Ricolne- doubt Arc has the MP for this.
SF2 Odd Eye
DQ8 Rhapthorne
FF9 Beatrix- She makes it hilariously far with reflect, but the physical uber phase shuts her down nicely.
FF4 Zeromus
S2 Riou
WA4 Lambda Zellweger- Multi acting! Bye Lambda.
WA3 Malik Benedict- Iori rap videos are about as scary as Malik is vs bosses.
PSs Dark Force
FFX Yunalesca- No absorb.
VH Ash Lambert- Status.
PS2 Rolf Landale
XS Albedo- Albedo. XS2 form gets smoked bad by fire damage.
SH3 Gilbert- Close, but I think Izanami 2HKOs and gets those two turns.
SH3 Shania
SO3 Luther Lansfeld- Luther durability.
BoFs Deis- Status.
SO2 Claude Kenni-
Disgaea Lamington
DW4 Necrosaro- Boss form doesn't have enough HP? Could be wrong.
MMXCM Marino
SH3 Killer
BoF3 Teepo
SH3 Johnny Garland
AtLC Choko
CC Miguel- None of these merit comments.
OB Rashidi- Rashidi's draining is immuned, and that's bad. He may have been able to pull of fthe blitz otherwise, Izanami's physical takes time to get good.
FF4 Rosa Harvey
Lufias Gades
MMXCM X
FF6 Celes Chere
OB Endora
FFX Lulu- Lulu gets statused out.
DQ8 Jessica Albert- Bounce gives Izanami some trouble but I strongly suspect she just smashes with her physical anyway.
BoF1 Zog- Um, ouch. Probably Izanami, but... this is ugly.
PKMN Lugia
WA3 Asgard
G2 Millenia
FFT Altima- Altima... um, no. Stat downs alone give her trouble, even if she's hitting the right element.
FE8 Eirika
FF4 Valvalis
Saga Asellus
SH2 Kurando Inugami
VPs Lenneth Valkyrie
FFX Jecht
XG Id
FF5 X-Death
WA4 Raquel Applegate
Saga T260G- Gravity attacks give trashcan fits.
PS4 Zio- Zio gets surprisingly close here, but no.
DQ8 Dhoulmagus
DQ8 Sir Leopold- Like Zio, he'd have a good shot if he went first.
FF5 Gilgamesh
XS KOS-MOS- Angry Japanese Goddess purges Shion's hookerbot. Sounds right.
S3 Emily
Suikos Lucia
VP1 Genevieve
Lunar1 Xenobia
Pers4 Naoto Shirogane
S2 Sierra Mikain
SO2 Berle
SO3 Nel Zelpher
SoM Purim
BoF2 Ryu
SO2 Cyril
CT Magus (Janus Zeal)
AtLC Diekbeck- Diek lacks the right elements to do this.
PS4 Chaz Ashley
About what I figured. High godlike but beatable.