Disgaea 5 Carnage Baal Defeated in One Turn

Defeating Carnage Baal Celestial Hell in 1 Turn
1. Get Geared
Make 3 characters, 1 with max stats, 1 with at least 50 million stats, 1 with at least 25 million stats. I recommend a sage and Killia be in the mix
To do this max out a Carnage Trapezohedron and clone it.
To Max a Trapezohedron, turn on Boss Forever in the Cheat Shop, enter and use Diver 10 (you clone in the alchemy shop) to the boss floor. Kill all enemies on the boss floor on the highest difficulty you can, preferably level 20 in cheat shop. (Making curry with 3 elixir and filling it with carnage gear and 100 fists gives you 100% critical and a lot of HP that helps with this process.) Set the item to mystery room route, kill any level sphere and mystery room you can, and lift any level fish as you dive down 10 floors and kill item bosses. Defeat 42 item gods to gain all unique innocents. Continue until you no longer receive item training bonus. Then use a sage land decimator to kill all enemies until the kill bonus is set to 400. This should give your gear over 400,000,000 HP and 2,000,000 in each stat. Clone this item by entering with mystery room equipped and run through the floors killing only what you need to. Turn off Boss forever in the cheat shop and only kill the bosses on boss floors you hit. Do not use dive 10s and 20s on floor 1s. Find the mystery room that requires jumping. Jump to the top using triple jump obtained by maxing the Life Support Unit Squad. Talk to the Item God at the top and have a chance to clone the item you are in. The higher the floor, the more likely this is to succeed. Repeat this process until the 8 characters are geared.
Use assembly points to max out jump, move, and stats as well as increase the item level limit every 500 floors.
Repeat this process with a rank 40 weapon for the
Make 8 characters, including the top 3, with at least 1.6 billion HP. Max Traps will get most to around 1.4 billion. Use the Chara world to raise HP aptitude or use the character to raise defense weapon mastery.

Gear can be seen here    • Gear for beating Baal in one turn  

2. Get Evilities
The 2 strong Characters need the following evilities
• Unique Evities: Greedy Disposition (Nether Noble) Assault Attack (Valkyrie) Rage Charge (Bear)
• Common Evilities: Violence (Void Dark) Impact Charge (Sludge) To the Death (Lady Samurai) Fighting Spirit (Dark Knight)
The others need
• Unique Evilities: Evil Eye (Chrimera) Support Attack (Archer) Angel Song (Celestial Hope)
• Common Evilities: Regeneration (Zombie)
• 1 Person needs (preferably Seraphina) Liscensed Caretaker (Maid) Angel Leadership (Celestial Hope)
3. Squads
Put the Main as the leader of the Foot Soldier squad. Give it 20 members.
Put the Second as the leader of the Dark Assembly Squad and give it 20 members
Put the third as the leader of the Relief Party and give it 20 members
Capture level 9999 LoC people from the item world as you go or in Double Illusion land of carnage using the unique innocent hostage negotiator. Use your main to threaten the enemies as leader of the Interrogation Squad. Strengthen the Foot Soldier Squad, the Dark assembly Squad, and Relief Party squad until they all have at least 1500 to 2000 members. (I think it caps at 1500). Place main back as leader of Foot Soldier Squad before beginning the boss.
4. Netherworld Edit: Edit the netherworld exterior with bonus costs
5. Overload: Give 1 character with a throw of 7 Logan’s Overload and give the rest Indomitable Spread to heal. Christo needs his original overload.
6. Assembly Bills: pass Charge Bonus Gauge, Critical Situation, All-Out Attack