In game

As the Pet Glossary shows it. A pet you own also shows its tier (up to five ✦), its level and how charged it is.

As the game lists them. The same for all 39 pets.

Founders Dragon

Mythic pet3 steps

Gives you−15% enemy Generic Defenseon its attacks: its passive, Deep Wounds

Attack

Pet damage×120%

Aura

Given to our beloved FOUNDERS who supported us since the beginning!

Pet damage (“Bonus Damage” in game) is how hard Founders Dragon hits. It does not raise your damage.

its attack, then 2 upgrades

Its attack
Shown above, with its pet damage.
AbilityBlazing Tornado
Occasionally spawns a burning tornado dealing 150% damage over time to enemy hit by it.
UpgradeFiery Aura
Deals 20% damage to enemies within a small radius.
Passive · what you getDeep Wounds−15% enemy Generic Defenseon its attacks
Pet Attacks will lower the Generic Defense of the enemy by 15%.

The glossary lists these 3 steps in this order. We don't have data yet on which tier unlocks each one.

We don't have data on where this pet comes from yet.