Check the Tonberry Troupe site for their information on this fight!
They also have a Cater Solo Guide for tiers 1-13!

(Press the button to see more information about each run!)

Character 1
Character 2
Character 3
Score
Creator
Video link
Summon
Notes
Written strategy
Emperor EX+3LBYuna EX+3LBRosa EX+3LBInfihttps://youtu.be/DE2wOzMGdE4BrothersThis tier is a lot easier than it's predecessor, as most of the boss waves really are only single target. Even the malboro on wave 4, the adds are easily passively AOE'ed down and don't really need any attention, especially since when the main malboro dies the adds despawn anyway.
Celes EX+3LBEmperor EX+3LBRem EX+3LBmzpro2https://youtu.be/iMwykkDwll8ShivaEmperor is recommended here, now here's the thing... You don't actually need debuff immunity or yuna in the team, instead be stupid like me and pray to RNGesus... For real tho while i did kinda have a bad gameplay showcase, it kinda worked in the end.
Yuna EX+3LBBalthier EX+3LBSetzer EX+3LBJin Leehttps://youtu.be/ZseeBsxwEhw
BrothersDebuff evasion recommended. Melee resist stage. Tips in video description.
Yuffie EX+3LBRosa EX+3LBUltimecia EX+3LBFirezzhttps://youtu.be/ZvOO5CAckR4BrothersA clear with Brothers showcase.
Celes EX+3LBRosa EX+3LBSetzer EX+3LBSidra_Gameshttps://youtu.be/3NzADKZrm-gShivaNo Emperor or Ulti? No problem! I summoned on wave 3, as it posed a bigger problem for me than the last wave, which I then utilized Setzer to lock down and keep me safe.
SelphieRosa EX+3LBEmperor EX+3LBJelis Whttps://youtu.be/Ec2SwYGkncYIfritLmao that was NOT good gameplay at the end. Had to reset once on the 4th wave and started panicking going into the last wave and made a bunch of mistakes, the most egregious being using Emperor's EX on the target that did NOT have his traps on it already. But fuckit, I completed! \o/
Ignis EX+2LBSerah EX+2LBKuja EX+3LBGaanrohttps://www.youtube.com/watch?v=-f1CiqmYvLYIfritVoice Commentary. My Serah has near perfect arts, only missing a Debuff Boost. Ignis should spend most of the fight in his Pastry stance. Between Ignis's and Serah's HP+ attacks, it should be easy to conserve skills on Wave 2. For Wave 4, focus the big Malboro. Again, save your Ultimas. You can burn through the Ring Holys if you need to shave. Serah should apply poison as needed to help manage the fight. On the last Wave, wait until the Behemoth buffs itself before you summon, then start spamming skills as needed.
King EX+3LBLennaRosa EX+3LBmarvinhttps://www.youtube.com/watch?v=0WvAdgQ3L7AIfritInitial clear Ultimecia Lenna Serah
https://www.youtube.com/watch?v=M8DNWoQhuaM
Kuja EX+3LBYuna EX+3LBRosa EX+3LBDFFOO GL SOhttps://youtu.be/MKcd9_dn2GILeviathanTier Gimmick: Resist Melee
Battle Data and more tips at video description. 3 boss wave (2, 4, 5)
MVP: Yuna EX+3LB
Cure the debuffs. Rosa helps to make sure Kuja and Yuna's HP+ hits harder and conserve their skills for uses when needed.
Ace EX+3LBLennaRosa EX+2LBTequila7https://www.youtube.com/watch?v=DMchzsXBBzwBrothers1 reset for the last wave.
Keep Lenna Wind Drake Arrow up for the debuffs, Rosa Prayer up at all times.
Ensure it is not a full party break for the Phoenix second life.
Control the Weedlets brv so that it does not one shot your characters.
Summon & go all out Spiral comboing on the Ultima Weapon when you see it trying to buff itself.
Yuffie EX+2LBYuna EX+3LBSerah EX+3LBSnoopBall PHhttps://youtu.be/0KP464ba_jAIfrit
Ace EX+3LBSerah EX+3LBRosa EX+3LBAckitaruhttps://youtu.be/Fm-IK3INj3MShivano reset
Kuja EX+3LBRosa EX+3LBYuffie EX+3LBDaspharaohhttps://youtu.be/51NC8t7wyrYLeviathanEnemies will always act more of less the same. Yuffie keeps bravery gains and debuffs in check, Kuja breaks and Rosa batteries and keeps everyone alive. Emperor makes this tier much easier.
Emperor EX+3LBRosa EX+3LBYuna EX+0LBVayne Novushttps://www.youtube.com/watch?v=Z7K0h96ImkMLeviathanResistance
Melee Resist

Enemy Description
Multiple Bosses, Debuffs including Poison, Blind, ATK/MBRV/DEF/SPD DOwn

Recommended Roles
AoE DPS, Healing, Debuff Evasion
Sabin EX+3LBYuna EX+3LBEmperor EX+3LBRandantehttps://youtu.be/jyHofvmw9kcIfrit
Emperor EX+3LBYuna EX+3LBKuja EX+3LBSsvegettohttps://www.youtube.com/watch?v=idEi3aJFBrEShivaDispell the nasty debuffs with Yuna and don't get broken too often. Keep most aoe Skills from Emperor and Kuja for the last wave and go nuts.
Emperor EX+3LBYuna EX+3LBRosa EX+3LBXcaliblur 1https://youtu.be/xn4dLIxj-EQBrothersBest to summon before ultima weapon casts it's self buff. This tier is quite lengthy so you need to be able to conserve skill uses in between.
Yuna EX+3LBVaan EX+3LBVanille EX+3LBAarolei/Leileehttps://youtu.be/Vro_yOu7JFELeviathanGood AoE damage is the name of the game this tier. Debuffers and Dispellers can also find use here. Phoenix and Mother Weed eat most of the turns. Wave 5 is not that scary. Go all in with everything left.
Yuna EX+3LBAshe EX+0LBEmperor EX+3LBUltima [ITA]https://youtu.be/ieQHevjkN7QBrothersNo resets. My first team was with Vanille 3/3 in place of Aerith. Video link of first perfect run: https://youtu.be/hSp18d,JeMwk. My second run was with Aerith in place of Vanille: https://youtu.be/P8Jf8jTRnUc
Emperor EX+3LBRosa EX+3LBSelphieTeleutehttps://youtu.be/Bc20PUPgdzwBrothers
Yuffie EX+3LBVaan EX+3LBY'shtola EX+3LBPalladhttps://youtu.be/OkDxuhLtt-cShivaNot that difficult just bring a someone who can clean debuffs and a healer. I did it first try. no resets.
Emperor EX+3LBRosa EX+3LBLennaScarletClairehttps://youtu.be/XH1iLiZ7l7oRamuhInitial clear. Emperor makes this Chaos looks like a Cosmos.
Celes EX+3LBRinoa EX+3LBLennaSlidePHhttps://youtu.be/FKCPc46fORU?list=PLXWMMsdQa3cKk6lOshtmHArr4guNT4v4vLeviathan
AphmauRosa EX+0LBUltimecia EX+3LBGMagicshttps://www.youtube.com/watch?v=baQjt_9IYrcIfrit
Emperor EX+3LBLennaRosa EX+3LBAmateracu1991 DFFOOhttps://youtu.be/blGSkD7SUNgLeviathanPretty straightforward team that most people proabably used
Yuna EX+0LBAce EX+2LBLilisette EX+1LBkeihttps://youtu.be/KJRdJomVXr8Leviathan
Emperor EX+3LBYuna EX+3LBVaan EX+3LBRed XIIIhttps://youtu.be/oQXowZALFfgIfritThe Phoenix is the gatekeeper of this fight, you kill him without problems? , you most likely got this one in the bag!
Emperor EX+3LBSelphieRosa EX+3LBKayinhttps://www.youtube.com/watch?v=WTbQ1R9ftrMLeviathanCommentary voice
Emperor EX+3LBYuna EX+0LBSetzer EX+3LBGeneral Solidorhttps://youtu.be/z16BT-corjoBrothersPhysical Resist Theme - Emperor is the MVP here, with his traps it makes it a lot more manageable. Yuna has her healing/auras and her damage is decent with Valefor at 0/3. Setzers delay and freeze is amazing per usual and excellent battery from EX.
Yuna EX+3LBVaan EX+3LBCeles EX+3LBgmshugohttps://youtu.be/ONTYEn63hwYShivaPerformed this battle on Jan 2020 with Summon Board x5
Noctis EX+3LBSetzer EX+3LBSelphiecisamdffoohttps://youtu.be/2-aTF5qMhB0Shiva
Emperor EX+3LBKrile EX+3LBLennaBig Alhttps://youtu.be/008fTUM5MKAShivaGen Strat: Emp-Main DPS, Krile-Side DPS/Provide BRV Protection with Ex, Lenna-Wind Drake as late as possible in Pheonix and only reapply when buff is almost out. Manage skills and watch for HP attacks
Emperor EX+1LBRosa EX+3LBKimahri EX+3LBKainHighwind27https://youtu.be/eGoPNF5JzjYShivaThroughout the fight, you want to save Kimahri's Nova for when the bosses are doing an AoE attack, to avoid the debuff. Rosa's Pray will help mitigate damage from the HP Poison, but not fully out heal it. On the final wave I summoned early and focused the Malboro down so it couldn't get it's Bad Breath off.
Emperor EX+3LBLulu EX+0LBSelphie EX+2LB442k93Jelis Whttps://youtu.be/_ooTFzaUhFQIfritReclear to free Rosa
Emperor EX+3LBAshe EX+0LBIgnis EX+0LB360k117inkwelderhttps://www.youtube.com/watch?v=FKZbylsei5wIfritVoice commentary
Emperor EX+3LBYuna EX+3LBSerah EX+0LB390k108heartnetzXIIIhttps://www.youtube.com/watch?v=uYkG3YjmSoMIfritTips in the video description
Rosa EX+3LBKing EX+3LBDeuce EX+3LB608k77MeowwwDFFOOhttps://youtu.be/KKuf1bm8G2UIfrit
Rosa EX+3LBGau EX+3LBLenna431k90MeowwwDFFOOhttps://youtu.be/HIN4mOiDeecIfritVoice commentary
Yuna EX+3LBSerah EX+1LBUltimecia EX+3LB388k112No13RoxasV3https://youtu.be/yvI_rlvl2bcLeviathan
Cater EX+3LBNoneNone920k53Vayne Novushttps://youtu.be/80dQQyUyUcEIfritTips in the video description, Solo run
Emperor EX+3LBLenna EX+0LBSetzer EX+0LB396k104Teleutehttps://youtu.be/oc_0ugbZOloBrothers
Emperor EX+3LBRosa EX+3LBSherlotta396k105artsnickhttps://youtu.be/A_gzF4Yc9tMLeviathan
Barret EX+3LBYuna EX+3LBYuffie EX+3LB355k120Chef's Knifehttps://youtu.be/AFV0viPP2V8Shiva
Emperor EX+3LBIgnis EX+3LBLulu EX+0LB451k88Jelis Whttps://youtu.be/c9K2Xl2VBOkIfrit
Emperor EX+3LBYuna EX+3LBBalthier EX+3LB355k116GamingJoeyhttps://youtu.be/gw7XveKIl6wIfrit
Y'shtola EX+3LBNoneNone1001k47silo conshttps://youtu.be/_TrwtSfCaAIOdinSolo runI had used Y'shtola with a BT and Onion Knight call with this. You can definitely change to any other call and also change to Diabolos summon instead of Odin.