24: Arbok 26: Raichu

Pikachu

25: Pikachu

Kanto

	HeartGold	SoulSilver	FireRed	LeafGreen	Crystal	Gold	Silver	Yellow	Red	Blue
Walking in tall grass or a cave
Power Plant			25% L22–26	25% L22–26					25% L20–24	25% L20–24
Route 2 south, towards Viridian City					+5% L4 +5% L4	+5% L4 +5% L4 +5% L4	+5% L4 +5% L4 +5% L4
Viridian Forest	5% L4 +1% L7 +1% L7	5% L4 +1% L7 +1% L7	5% L3–5	5% L3–5					5% L3–5	5% L3–5
	HeartGold	SoulSilver	FireRed	LeafGreen	Crystal	Gold	Silver	Yellow	Red	Blue
Receive as a gift
Pallet Town								100% L5

Hoenn

	Omega Ruby	Alpha Sapphire	Emerald	Ruby	Sapphire
Walking in tall grass or a cave
Safari Zone SE			5% L25–27	5% L25–27	5% L25–27
Safari Zone SW			5% L25–27	5% L25–27	5% L25–27
	Omega Ruby	Alpha Sapphire	Emerald	Ruby	Sapphire
Receive as a gift
Fallarbor Town Contest Hall	100% L20	100% L20
Lilycove City Contest Hall	100% L20	100% L20
Slateport City Contest Hall	100% L20	100% L20
Verdanturf Town Contest Hall	100% L20	100% L20

Sinnoh

	Platinum	Diamond	Pearl
Walking in tall grass or a cave
Trophy Garden	10% L22–24	10% L18	10% L18

Kalos

	X	Y
Walking in tall grass or a cave
Route 3	5% L4–5	5% L4–5
Santalune Forest	6% L3–4	6% L3–4