| Protosynthesis | Details | Pokémon | 
| Name | Jp. Name | ||
| Protosynthesis | こだいかっせい | ||
| Game's Text: | |||
| Boosts the Pokémon's most proficient stat in harsh sunlight or if the Pokémon is holding Booster Energy. | |||
| In-Depth Effect: | |||
| Increases the user's highest stat by 30% (or 50% for Speed) while Sunny Day is activated or if the Booster Energy is attached | |||
| Blocks Role Play & Doodle | Blocks Receive & Power of Alchemy | Blocks Entrainment | Blocks Trace | 
| Yes | Yes | Yes | Yes | 
| Blocks Skill Swap & Wandering Spirit | Blocks Gastro Acid & Neutralizing Gas | Removed by Mold Breaker / Turboblaze / Teravolt | Not used if user is Transformed | 
| Yes | No | No | Yes | 
Pokémon that can have the Protosynthesis ability:
| No. | Pic | Name | Type | Abilities | Base Stats | ||||||
| HP | Att | Def | S.Att | S.Def | Spd | ||||||
| #0984 | 
 | Great Tusk |     | Protosynthesis | 115 | 131 | 131 | 53 | 53 | 87 | |
| #0985 | 
 | Scream Tail |     | Protosynthesis | 115 | 65 | 99 | 65 | 115 | 111 | |
| #0986 | 
 | Brute Bonnet |     | Protosynthesis | 111 | 127 | 99 | 79 | 99 | 55 | |
| #0987 | 
 | Flutter Mane |     | Protosynthesis | 55 | 55 | 55 | 135 | 135 | 135 | |
| #0988 | 
 | Slither Wing |     | Protosynthesis | 85 | 135 | 79 | 85 | 105 | 81 | |
| #0989 | 
 | Sandy Shocks |     | Protosynthesis | 85 | 81 | 97 | 121 | 85 | 101 | |
| #1005 | 
 | Roaring Moon |     | Protosynthesis | 105 | 139 | 71 | 55 | 101 | 119 | |
| #1009 | 
 | Walking Wake |     | Protosynthesis | 99 | 83 | 91 | 125 | 83 | 109 | |
| #1020 | 
 | Gouging Fire |     | Protosynthesis | 105 | 115 | 121 | 65 | 93 | 91 | |
| #1021 | 
 | Raging Bolt |     | Protosynthesis | 125 | 73 | 91 | 137 | 89 | 75 | |
Pokémon that can have the Protosynthesis ability as their Hidden Ability:
| No. | Pic | Name | Type | Abilities | Base Stats | |||||
| HP | Att | Def | S.Att | S.Def | Spd | |||||










