at the old well.
in solaceon town where a old man in a blue suit is
If you mean the man you get the Old Rod from, he is in the house to the left of the Pokemon Center.
Nothing really.
The old man is not a Pokemon
You have to go to Cinnabar island after obtaining all 7 Kanto badges. After talking to Blue, the old man will move and you can battle Blue in that gym.
u give an old man(old man is in one of the houses in fusha city) golden teeth (golden teeth are in safari zone)
You get the flute by saving the old man in the Lavender tower. This requires you to first get the Silph Scope from the Game Corner to see and fight the ghost pokemon.
Pokemon blue or yellow has it but it's a old game
In Eterna City. The house guy is located I believe before the Gym, in the tallest blue building near the Gym. The old man in there will help you rename your Pokemon.
no, sadly. The day care man can only raise one pokemon at a time
Blue marlin.
He is in Eterna city there is a big buildig next to the pokemart and then you will see a old man wearing blue and has white beard! ;)