In the Safari Zone, which is in Fucshia City, you have to find this dude, Warren, his Gold Teeth. When you obtain it ( near where you get surf ), leave the Safari Zone, and visit the bottom-left house in Fucshia, give Warren his teeth, and he'll give you strentgh ( and the poke ball in his house is blocked by a boulder. move it, and there will be a rare candy there )
Strength
you use strength
In the Game Boy Color version of Pokémon, you can obtain the Strength HM (Hidden Machine) in the red version by visiting the Safari Zone. After completing the Safari Zone and obtaining the Gold Teeth, you need to return them to the warden in his house, which is located in Fuchsia City. He will reward you with the Strength HM.
It's in safari park.. right in front of the house where u get Surf
It will be at the top of Mt. Ember on One Island. You will need Rock Smash and Strength to get there.
To get the HM Strength in Pokemon Red you need to do a little side quest. This quest involves finding the Safari Zone Warden's missing Gold Teeth which can be found in Area 3 of the Safari Zone itself. After finding the Gold Teeth and bringing them back to the warden he will give you the HM for Strength.
Red version was not made to migrate with emerald.
No
There is no Battle Frontier in Red Version.
Emerald can trade with Leaf Green but not Pokemon Red
for gameboy: blue version, red version, green version (japan only), for gameboy advance: fire red version, leaf green version
you cannot rent any Pokemon in red version