Happiness

Happiness, also called Friendship, is a hidden value from 0 to 255 stored on every Pixelmon. Each Pixelmon begins at a base value determined by its species. The value increases through actions such as leveling up and traveling outside the Poké Ball, and decreases when the Pixelmon faints or is given certain bitter medicines. Happiness is a requirement for some evolutions and sets the power of the moves Return and Frustration.

Base happiness

A Pixelmon's happiness is set to a species-defined base value when it is caught, hatched, or received. Most species use a base value of 50. Many legendary and pseudo-legendary species use 0, and a small number of species use higher values. Reviving a Pixelmon from a fossil and trading both reset happiness to this base value.

Base happiness	Species	Examples
140	11	Clefairy, Clefable, Chansey, Cleffa
100	15	Mew, Celebi, Jirachi, Luxio
90	5	Latias, Latios, Tornadus, Thundurus
70	3	Butterfree, Timburr, Stunfisk
50	840	Default for most species.
35	73	Articuno, Zapdos, Moltres, Dratini
20	3	Nymble, Armarouge, Ceruledge
0	79	Wo-Chien, Chien-Pao, Ting-Lu, Chi-Yu

Raising happiness

The following actions raise happiness. The amount gained decreases as the current value rises, so progress toward 255 slows at higher values.

Action	Happiness gained	Notes
Traveling outside the Poké Ball	+2 (+1 at 200 or above)	Applied once every 40 seconds while the Pixelmon is sent out and following its owner.
Leveling up	+5 / +3 / +2	Below 100 / below 200 / 200 or above.
EV-reducing Berries	+10 / +5 / +2	Below 100 / below 200 / 200 or above. These berries lower an effort value at the same time.
Vitamins and EV items	+5 / +3 / +2	Below 100 / below 200 / 200 or above, when the item still raises an effort value.
Berry Juice	+4	Applied when the item is used on the Pixelmon.
Curry	Varies	The amount is determined by the finished dish's rating.

Items and balls that change happiness

The following items and Poké Balls modify happiness gain or set the value directly.

Item	Effect
Soothe Bell	While held, multiplies every happiness gain by 1.5.
Luxury Ball	A Pixelmon caught in one gains 1 extra happiness on each level-up.
Friend Ball	Sets a newly caught Pixelmon's happiness to 150.

Lowering happiness

Few actions reduce happiness. Fainting in battle reduces it by one point. The bitter herbal medicines apply a larger reduction at higher values; the larger value listed below applies at 200 or above.

Cause	Happiness lost
Fainting in battle	-1
Energy Powder	-5 (-10 at 200 or above)
Energy Root	-10 (-15 at 200 or above)
Revival Herb	-15 (-20 at 200 or above)

Evolution by happiness

The following Pixelmon evolve when they gain a level while their happiness is at or above the listed value.

Pixelmon	Evolves into	Happiness needed
Azurill	Marill	160+
Budew	Roselia	160+
Buneary	Lopunny	160+
Chansey	Blissey	160+
Chingling	Chimecho	160+
Cleffa	Clefairy	160+
Eevee	Sylveon	160+
Eevee	Espeon	160+
Eevee	Umbreon	160+
Golbat	Crobat	160+
Igglybuff	Jigglypuff	160+
Meowth	Persian (Alolan)	160+
Munchlax	Snorlax	160+
Pichu	Pikachu	160+
Riolu	Lucario	160+
Snom	Frosmoth	160+
Swadloon	Leavanny	160+
Togepi	Togetic	160+
TypeNull	Silvally	160+
Woobat	Swoobat	160+

Return and Frustration

Two moves derive their power from happiness. Return increases in power as happiness rises; Frustration increases in power as happiness falls.

Move	Power formula	At happiness 0	At happiness 255
Return	happiness / 2.5	1	102
Frustration	(255 - happiness) / 2.5	102	1

Each move's power is rounded down, to a minimum of 1.

Checking happiness

A Pixelmon's current happiness is shown on the Happiness line of its summary in the Poké Checker.