(I just wanted to do this for fun, I don’t think they should change him and i’m sorry if you don’t like this)
(I’m also writing real numbers for skills, everything would be at level 1)
The Mad Hatter
The Mad Hatter causes chaos amongst his enemies, throwing and smashing in a mad dash.
“We never get compliments, you must have a cup of tea!”
Stars: 
Role: Control
Position: Midline
Trials Team: Blue
Core Stat Buffs Lvl 1
507 max hp - 732 max hp
Skills
White Skill: Beat The Clock 
Fantastic
The Mad Hatter smashes his pocket watch dealing 507 to the 4 fastest enemies, this also slows all enemies attack and movement speed by 60%.
If enemies are charmed while The Mad Hatter performs this skill their charm is increased by 3 seconds.
The slow is less effective on enemies above level 1.
Green Skill: Mad Tea Party 
Fantastic
The Mad Hatter throws tea cups and saucers at the three enemies with the most energy, dealing 427 damage to each enemy hit and reduces their armor by 244 for 8 seconds.
Each tea cup and saucer increases the amount of armor removed.
tea cup and saucer 1 - 244
tea cup and saucer 2 - 324
tea cup and saucer 3 - 402
Blue Skill: Sweet Tooth 
The Mad Hatter uses especially sweet tea to charm enemies in a row for 6 seconds each.
If The Mad Hatter has below 500 energy when he performs this skill he gains 300 energy and gives allies 150 energy.
Each charm has a chance to fail against enemies above level 21
Purple Skill: Oblivious 
The Mad Hatter is immune to all debuffs.
Whenever a debuff gets applied to The Mad Hatter and fails he slows that enemys attack and movement speed by 30% for 2.5 seconds and heals 2300 hp
Debuff immunity has a chance to fail against enemies above level 41
Red Skill: Pass The Tea 
Fantastic
Allies are immune to debuffs for the first 4 seconds of each wave.
The two strongest allies now have “Oblivious” applied to them as well.
“Sweet Tooth” Now deals 15546 damage to the non charmed enemies each second over 4 seconds.
Oblivious apply has a chance to fail on allies above level 121
+13173 Skill Power
+7717 Reality
+14030 Damage from “Mad Tea Party”
Friendships:
Unbirthday Par-Tea
The Mad Hatter and Alice
Basic Attacks & “Mad tea Party” Slow
Disk Power
+372 Max hp
+175 Basic Damage
+474 Damage to slowed enemies
Memories
+5.0% attack speed
The Mad Hatter’s basic attacks and “Mad Tea Party” slow enemy movement and attack speed by 3.0%
+5.0% attack speed per star
+3.0% slowed attack and movement speed per star
Allies: Baymax, Elsa, Hades
Strong Brew
The Mad Hatter and Rafiki
Better Charms
Disk Power
+438 Skill power
+534 Armor
+275 Damage to charmed enemies to Hatter and allies
Memories
Charmed enemies attack and movement speed are increased by 40%.
Charmed enemies do not gain energy while charmed.
When allies are charmed Hatter stuns them for 5 seconds.
+40% Movement and attack speed
Allies: I cannot find the allies for this friendship, but if you do know them then they are the same.