Slionhearts are diminutive humanoid knights standing atop giant green Slime that have magnificent, bushy white beards, a visor like that on a helmet, and a short dark green cape flowing from their backs. The knights dual wield swords this time and they wear dark green armor and a silver and red crown on their heads. Their squishy steeds sport similar beards, and rumors abound that these are in fact grandpa slimes.
These supreme slimes boast near-supernatural strength. As they have so thoroughly surpassed their squishy siblings, they do not deign to even include 'slime' in their name
Slionhearts appeared in the second card pack after the game changed to Ace, entitled "And Thus Into Legend...", as a super rare card exclusive for Priest-type leaders.
Slionheart first appeared as a S-rank monster of the Slime family as part of the Slime Fest event on its own banner alongside Lime slime. Starting with Version 4.0 of the game, it can be scouted from any banner, including the Regular SP Scout.The slionheart can be faced as a boss in Chapter 3, Episode 5 of the event quests, as well as the EX boss battles. It can participate in the King bubble slime's Battle Road as a party member.
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