Here are some of the trolls in Fabula Ultima (using only the classes in the core rulebook):

Karkat Vantas

Pronouns: He/Him

Identity: Brave and Fearless Leader

Theme: Ambition

Origin: Alternian Subgrub

Classes: Orator 3/Fury 2

Attributes

DEX: d8 | INS: d8 | MIG: d8 | WIL: d8

Stats

HP: 50 (Crisis: 25)

MP: 50

IP: 6

Equipment

Weapon: Sickle (Steel Dagger Reskin): [DEX+INS] +1, [HR+4] physical

Off-hand: None

Armor: None

Accessory: None

Skills

Condemn (1)

Unexpected Ally

My Trust in You (1)

Provoke (1)

Frenzy

Tavros Nitram

Pronouns: He/Him

Identity: Former Boy Skylark

Theme: Duty

Origin: Alternian Cliffside

Classes: Chimerist 1/Wayfarer 3/Fury 1

Attributes

DEX: d6 | INS: d10 | MIG: d10 | WIL: d6

Stats

HP: 50 (Crisis: 25)

MP: 50

IP: 8

Equipment

Weapon: Lance (Heavy Spear Reskin): [DEX+MIG] , [HR+12] physical

Off-hand: None

Armor: None

Accessory: None

Skills

Feral Speech

Faithful Companion (2}

Tavern Talk (1)

Adrenaline (1)

Terezi Pyrope

Pronouns: She/Her

Identity: Legislacerator-in-training

Theme: Vengeance

Origin: Alternian Forests

Classes: Orator 3/Weaponmaster 2

Attributes

DEX: d8 | INS: d10 | MIG: d6 | WIL: d8

Stats

HP: 40 (Crisis: 20)

MP: 50

IP: 6

Equipment

Weapon: Swordcane (Rapier Reskin): [DEX+INS] +1, [HR+6] physical

Off-hand: None

Armor: None

Accessory: None

Skills

Condemn (2)

Persuasive (1)

Counterattack

Bladestorm

Vriska Serket

Pronouns: She/Her

Identity: Ex-Corsair

Theme: Guilt

Origin: Highblood Castle

Classes: Entropist 2/Rogue 2/Darkblade 1

Attributes

DEX: d8 | INS: d8 | MIG: d8 | WIL: d8

Stats

HP: 45 (Crisis: 23)

MP: 50

IP: 8

Equipment

Weapon: Cutlass (Bronze Sword Reskin): [DEX+MIG] +1, [HR+6] physical

Off-hand: None

Armor: None

Accessory: None

Skills

Entropic Magic (1)

Lucky Seven

Dodge (1)

Cheap Shot (1)

Agony (1)

Spells

Gamble

I will presume that, using the Atlases, you could do more, but I don't have those. If you do, let me know how you would change these trolls.