This concept counts as an entry for the Animal Kingdom Concept Contest.
Thumper
Source: A Bug’s Life
Info: Hopper’s psycho “pet” is on the loose! Thumper charges into the battlefield and thrashes his enemies who are foolish enough to beat him.
Rarity: 
Role: Damage
Position: Front
Trial Team: Red
Quote: “Pant, pant, pant, pant, AAAAAAAAAAAAAAAAAAAAAAAAAAAAA!”
Entrance: Thumper leaps into his position and snarls at his enemies.
Victory: Thumper screeches victoriously.
KO: Thumper gets knocked back and unconscious.
Revival: Thumper gets knocked back, but he quickly recovers himself and screeches angrily.
Basic: Thumper claws at the enemy.
Skills:
- White: Feral Pounce
The player chooses the enemy for Thumper to pounce at them, dealing X Normal Damage. Then, he targets his chosen enemy unless he gets knocked back. While on auto, Thumper chooses the enemy with the least HP to pounce.
If Thumper has 50% HP below, he is Berserk for 12 seconds and cannot fall below 1 HP.
- Green: Grasshopper Kick
Thumper kicks the front-most enemy, knocking them back, dealing X Normal Damage, and stunning them for 10 seconds. When the knocked-back enemy hits another one, it also gets stunned for 6 seconds.
The targeted stun has a chance to fail against enemies higher than level X.
- Blue: Frenzied Temper
Once Thumper falls below 50% HP, he screeches angrily, gaining 200% attack speed, 20 Normal Crit, and X Basic Damage and Armor for the rest of the battle.
- Purple: Resurgent
Thumper gains 20% of his attack speed and X Basic Damage for each 10% of his HP lost.
Once per battle, when Thumper gets KO’d, he revives and recover himself with X HP, become Berserk for 8 seconds, and cannot fall below 1 HP.
- Red: Reckless Rush
“Feral Pounce” deals X Normal Damage to other enemies nearby and grants Thumper X Armor for the rest of the wave.
Whenever Thumper crits an enemy, he has 50% chance to Super Crit instead. Also, he has 30% chance to gain 1 stack of Hardy every time he takes damage. Each stack of hardy blocks a debuff when consumed.
These chances are doubled while he is Berserk but is reduced against enemies above level X
Additional Stat Boosts:
- X Basic Damage
- X Max HP
- X Armor
Friendships:
Thumper/Scar
Ferocious Pack
Campaign Title: Quest for Food
Campaign Story Summary: Despite the urban environment of the City, Scar and Thumper are searching for food here.
Allies: The Beast, The Manticore, Goliath
Damage Allies Drains Health
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+X Max HP to Thumper and his allies
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+X Basic Damage to allies
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Thumper and his Damage role allies recover HP equal to X% of the damage dealt.
Thumper/Davy Jones
Thumpin’ Fury
Campaign Title: Thumpage
Campaign Story Summary: When Thumper broke free from jail, he stumbled upon Davy Jones, who recruited him for his ferociousness. Then, they will have vengeance against the heroes, including Jack Sparrow.
Allies: Shan Yu, Anger, Captain Hook
Apply Weakness on Enemy Attackers
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+X Basic Damage
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+X Skill Power
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+X Armor Negation
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When Thumper takes damage, he has X% chance to apply a stack of Weakness on an attacking enemy for 7 seconds; enemies with Weaknesses can receive up to 5 stacks and take 10% more damage each.