Boy and an Icefield Wolf, partners who understand each other well.

We Are FriendsKupa recovers 10% Max HP per second after not taking damage for 5s. When Kupa is killed, Popol can Pray for 3s to bring Kupa back to the battlefield. Cooldown: 30s. Every 3 consecutive attacks from Kupa will enhance Popol's next Basic Attack to deal (+220% Total Physical Attack) Physical Damage. Kupa has 2500 (+1200% Total Physical Attack) Max HP and inherits 100% of Popol's other attributes and passive equipment effects (excluding Jungling and Roaming equipment effects). Kupa deals an additional 120% damage against Creeps.
Kupa is powerful in combat, especially against Marksmen with lower sustainability such as Lesley and Brody.
But since Popol and Kupa don't have any Blink skills and Popol is quite squishy, they are at the mercy of more agile Assassins like Gusion and Karina.