you have to beat all gyms and the elite 4 in order to get past the guards to pallet town
There is NOT any guards in Pokemon in the middle of the earth.
Get past the Pimberton detective while he is sleeping.
give them credits
By defeating them in a Pokemon battle.
You have to get a balloon.
You can get get past the guards by the satellite of B.A.D.
with the camo suit
be invisible.
all you do is get a balloon and sneak past them but pace yourself.
On the first and second level, move to a safe spot and throw the bobs at the guards, get past the one, throw another one, and so on. On the third level, throw ninja stars at any lamps near guards and just walk past them.
When you are wearing the Chameleon Suit, you are invisible when you stop moving. You can slip past the guards and dogs using it. (see related question) In the Bistro, you need a chef hat to get the wine glass. When you get it, slip past the guards by going through the kitchen vent and across the light fixtures.