Onix - Pokemon Red, Blue and Yellow Guide - IGN

Pokemon Red, Blue and Yellow at IGN: walkthroughs, items, maps, video tips, and strategies

Celadon City - Pokemon Red, Blue and Yellow Guide - IGN

Rattata - Pokemon Red, Blue and Yellow Guide - IGN

Hypno - Pokemon Red, Blue and Yellow Guide - IGN

Scyther - Pokemon Red, Blue and Yellow Guide - IGN

Golem - Pokemon Red, Blue and Yellow Guide - IGN

How to get Onix & Machop in pokemon Red & Blue

Machop - Pokemon Red, Blue and Yellow Guide - IGN

Grimer - Pokemon Red, Blue and Yellow Guide - IGN

Seaking - Pokemon Red, Blue and Yellow Guide - IGN

Rock Tunnel - Pokemon Red, Blue and Yellow Guide - IGN

Magneton - Pokemon Red, Blue and Yellow Guide - IGN

Seel - Pokemon Red, Blue and Yellow Guide - IGN