Fool

Special Ability
In dungeons, Fool can confuse the enemies he attacks (more element = higher chance to confuse the enemy. This does not work as a Mage.) If the enemy has 75% more elements than you, the chance to confuse is 0%.

So for example if the enemy total elements are 1000, your fool needs to have at least ~800 total elements to have a chance to confuse and ~2600 for 100% chance, but you have up to 3 attacks per turn and confuse lasts 2 turns, so in reality you have 6 chances.

Step 1
Happy April Fools!

Hint: You need to be sure to use his true name! This goes in both cases!

Answer: Go to Settings and use the Input Code "Aprils Fool" (not case sensitive). You can do this multiple times until you have received 100 Fools Coins.

Step 2
Obtain the Fool Pet

Hint: Where could you use these fools coins? I wonder how many you need?

Answer: Take the Fools Coins to Newbie Dungeon and fight the boss there (It doesn't matter how many you bring with your team as long as you have 100 in your inventory). The boss is quite strong and you will likely need a team capable of running upper D3 depths. As for team composition, the boss can inflict Confuse at a rate of (((attacker elements/2) / defender elements) - 0.3)%. This causes your pets to attack fellow pets or even heal the boss. To help protect against this, bringing Assassins as your main damage-dealers is a good choice, since Mages can target several of your pets at once if they are confused instead of just single-targetting like Assassins. While you can bring Supporters, it is strongly recommended to use potions instead. Fool can confuse your Supporters, healing himself in the process. Bring at least two Defenders to draw in more attacks/confuse. Note: At least one pet on your team needs to be named "Aprils Fool"

Team Example: Turn 50, 50-70k growth This team won on the very last turn so this could be considered a bare minimum benchmark. This also means this team can lose, as the confuse rng from the boss could ruin a run quite easily.

Step 3
Evo

Answer: To get enough Fools Coins for the evo, you will need to fight the boss many times as he will keep dropping the coins. This can be made considerably faster with rogues and lucky talismans but be aware that the boss gets increasingly harder the more coins you have. Roughly 10x stronger in the end as it was for the unlock! The exact stat calculation can be found below, where "count" is the number of Fool Coins currently owned.

???
There is a secret version of the boss that you may accidentally encounter if you forget to name one of your pets going to the dungeon in a previous step "Aprils Fool". Fighting this boss will be very difficult, but will unlock a permanent item that multiplies your Battle stat by 7007% (except while in UAC).

If you would like to fight this boss, simply do not rename one of your pets to Aprils Fool, and you can encounter this harder version named "???". This version of the boss has stats = ~2,000 coins