Kappa

The Kappa is a mythical pet drawn from Japanese folklore, and in Grow a Garden it is obtainable from the Zen Egg at a 3.5% chance. That low hatch rate is the defining number here: at roughly one in every twenty-eight eggs, pulling a Kappa is a real grind, which is exactly what keeps a mythical-tier companion feeling earned rather than handed out.

Despite those steep odds, its rarity is logged as Standard, meaning the Kappa is a permanent, repeatably farmable pet rather than an event-locked limited. That is an important distinction: with enough Zen Eggs the Kappa is always theoretically reachable, and patient players can even chase duplicates for fusion or trading rather than treating a single copy as irreplaceable.

This row does not record a fixed sell multiplier, so value the Kappa through its mythical-tier passive ability and its thematic fit in a Zen-garden setup rather than a headline number. For anyone already farming Zen Eggs, the Kappa is a worthwhile and prestigious target, and because it remains in rotation you can pursue it steadily without the time pressure that haunts limited event pets.