Each pet has its own unity skill. The unity skill of a pet is a toggle skill which improves a stat/ability of the pet and its summoner.
A pet can learn its unity skill at level 45, 95 and 145 and each level (up to level 20) costs 2 JP. Each level has an increased cast cost and upkeep cost in MP.
Rarity
Pet
Unity
Ability
Lv1 Bonus
Lv20 Bonus
Normal
Pantera Physical Attack P.Atk
27
160
Normal
Poultry Physical Accuracy P.Acc
6.4
38.3
Normal
Tortus Physical Defense P.Def
27
160
Normal
Blue Pixie MP Recovery MP.Recov
29.4
189
Normal
Lydian Physical Defense Ignore, Magical Defense Ignore P.Def.Igno
29.4
189
Normal
Lydian Physical Defense Ignore, Magical Defense Ignore M.Def.Igno
29.4
189
Normal
Octopus Physical Attack, MP Regeneration P.Atk
29.4
189
Normal
Octopus Physical Attack, MP Regeneration MP.Regen
1.1
3
Normal
Orc Physical Attack, Physical Defense P.Atk
29.4
189
Normal
Orc Physical Attack, Physical Defense P.Def
29.4
189
Normal
Red Pixie Magical Attack M.Atk
42
270
Normal
Siren Magical Attack, Magical Accuracy M.Atk
29.4
189
Normal
Siren Magical Attack, Magical Accuracy M.Acc
7.0
45.3
Normal
Skeleton Attack Speed AtkSpd
1.86
20.1
Normal
Wolf Evasion, Physical Attack Eva
7.0
45.5
Normal
Wolf Evasion, Physical Attack P.Atk
29.4
189
Normal
Yeti Physical Defense P.Def
42
270
Basic
Harpy Attack Speed AtkSpd
2.5
26.8
Basic
Hawkman Physical Attack, Physical Defense P.Atk
37.8
224
Basic
Hawkman Physical Attack, Physical Defense P.Def
37.8
224
Basic
Nightmare Max HP MaxHP
283
1670
Basic
Salamander Physical Attack, Magical Attack P.Atk
37.8
224
Basic
Salamander Physical Attack, Magical Attack M.Atk
37.8
224
Basic
Unicorn Max MP MaxMP
283
1670
Rare
Abomination ???
Rare
Angel Physical Defense, Magical Attack P.Def
47.6
287
Rare
Angel Physical Defense, Magical Attack M.Atk
47.6
287
Rare
Gnoll Block Rate, Block Defense, Physical Attack BlockPer
1
20
Rare
Gnoll Block Rate, Block Defense, Physical Attack BlocDef
24
480
Rare
Gnoll Block Rate, Block Defense, Physical Attack P.Atk
47.6
287
Rare
Ice Maiden Magical Attack, Cast Speed M.Atk
47.6
287
Rare
Ice Maiden Magical Attack, Cast Speed CastSpd
2.1
23.3
Rare
Joker None
Rare
Kentauros Physical Attack P.Atk
68
410
Rare
Naga Magical Attack M.Atk
68
410
Special
Cerberus Physical Attack, Physical Accuracy P.Atk
56
322
Special
Cerberus Physical Attack, Physical Accuracy P.Acc
13.4
77.5
Special
Genie Physical Attack, Physical Defense P.Atk
56
322
Special
Genie Physical Attack, Physical Defense P.Def
56
322
Special
Ifrit Magical Attack, Magical Defense M.Atk
56
322
Special
Ifrit Magical Attack, Magical Defense M.Def
56
322
Special
Stone Golem Physical Defense M.Def
80
460
Unique
Baphomet MP Recovery, Movement Speed MP.Recov
Unique
Baphomet MP Recovery, Movement Speed MovSpd
Unique
Blight Ogre ???
Unique
Death Tyrant Physical Attack, Attack Speed P.Atk
65.8
385
Unique
Death Tyrant Physical Attack, Attack Speed AtkSpd
3
32.9
Unique
Drillbot ???
Unique
Minotaurus ???
Unique
Mystic Koala Critical Rate CritRate
1.4
9
Unique
Undine ???
Unique
White Dragon Physical Defense, Magical Attack P.Def
65.8
385
Unique
White Dragon Physical Defense, Magical Attack M.Atk
65.8
385