#1.28
Bulbasaur/Sandslash
1.28
Artistmalxire
GrassGround
#28.1
Sandslash/Bulbasaur
28.1
Artisttonnerre
GroundPoison

55(-10)
HP
65(+10)
83(+17)
ATK
66(-17)
89(+20)
DEF
69(-20)
58(+7)
SP.ATK
51(-7)
61(+3)
SP.DEF
58(-3)
58(+7)
SPEED
51(-7)
404(+44)
TOTAL
360(-44)

Regular
Reg.
Sand Veil: During a sandstorm, has 1.25x evasion and doesn't take sandstorm damage.
Overgrow: When it has 1/3rd or less max HP, Grass-type moves have 1.5x power.
Hidden
HA
Sand Rush: During a sandstorm, has 2x SPEED and doesn't take sandstorm damage.
Chlorophyll: SPEED is doubled in sunny weather.

x4
Ice
-
x2
BugFireFlying
GroundIcePsychicWater
x1
DarkDragonFairyFightingGhostGrassNormalPoisonPsychicSteelWater
DarkDragonFireFlyingGhostGrassNormalSteel
x0.5
GroundRock
BugFairyFightingRock
x0.25
-
Poison
x0
Electric
Electric

#1
+
Bulbasaur
1
Artistxillo
GrassPoison
Lv.16
#2
+
Ivysaur
2
Artistkingofthe_x_roads
GrassPoison
Lv.32
#3
+
Venusaur
3
Artistblaquaza
GrassPoison
#1
+
Bulbasaur
1
Artistxillo
GrassPoison
Lv.16
#2
+
Ivysaur
2
Artistkingofthe_x_roads
GrassPoison
Lv.32
#3
+
Venusaur
3
Artistblaquaza
GrassPoison
#27
+
Sandshrew
27
ArtistGame Freak & blaquaza
Ground
Lv.22
#28
+
Sandslash
28
ArtistGame Freak & blaquaza
Ground
#27
+
Sandshrew
27
ArtistGame Freak & blaquaza
Ground
Lv.22
#28
+
Sandslash
28
ArtistGame Freak & blaquaza
Ground

Pallet Town (starter) (gift), Cerulean City (trade), Viridian River (static)
Pokemon: 1
Evolve Bulbasaur (Lv16)
Pokemon: 2
Evolve Ivysaur (Lv32)
Pokemon: 3
Route 4, 8, 9, 10, Mt. Moon
Pokemon: 27
Route 26, 27, Cerulean Cave, Union Cave, Victory Road, Evolve Sandshrew (Lv22)
Pokemon: 28