These are the top ten Pokémons who gain the largest boost in stats while evolving.
I. Gyarados and Milotic
- Magikarp to Gyarados -> 200 to 540 (340)
- Feebas to Milotic -> 200 to 540 (340)
II. Melmetal and Golisopod
- Meltan to Melmetal -> 300 to 600 (300)
- Wimpod to Golisopod -> 230 to 530 (300)
III. Noivern
- Noibat to Noivern -> 245 to 535 (295)
IV. Frosmoth
- Snom to Frosmoth -> 185 to 475 (290)
V. Solgaleo and Lunala
- Cosmoem to Solgaleo / Lunala -> 400 to 680 (280)
VI. Toxtricity
- Toxel to Toxtricity -> 242 to 502 (260)
VII. Sunflora
- Sunkern to Sunflora -> 180 to 425 (245)
VIII. Gardevoir / Gallade and Lucario
- Kirlia to Gardevoir / Gallade -> 278 to 518 (240)
- Riolu to Lucario -> 285 to 525 (240)
IX. Hariyama
- Makuhita to Hariyama -> 237 to 474 (237)
X. Slaking, Vespiquen, Chansey and Lurantis
- Vigoroth to Slaking -> 440 to 670 (230)
- Combee to Vespiquen -> 244 to 474 (230)
- Happiny to Chansey -> 220 to 450 (230)
- Fomantis to Lurantis -> 250 to 480 (230)