How to get Charmander as your Pokémon in Red Rescue Team?

You can use this guide (one I have used many times for this game) to find out. There are 50 questions you could be asked and only 9 that will actually be asked. The way to get Charmander is by answering the questions with the 'Hardy (male) or 'Brave' (female) answers, if you don't get some questions that give you the opportunity to be more "Hardy" or 'Brave' than anything else then quit and reset the game.

These are the questions you are looking for for Hardy:

Question: A test is coming up. How do you study for it?

Answers: Study hard. +2 Hardy

Question Can you focus on something you like?

Answers: Yes. +2 Hardy

Question When the going gets tough, do you get going?

Answers: Yes. +2 Hardy, +2 Brave

Question There is a bucket. If you put water in it, how high will you fill it?

Answers: Full. +2 Hardy

These are the questions you are looking for for Brave:

Question You're going bungee jumping for the first time. Since it's scary, you decide to test the jump with a doll And the bungee cord snaps! Will you still try to make a jump anyway?

Answers: Yes. +3 Brave

Question There is an alien invasion! What will you do?

Answers: Fight. Do Question #2b

Question You valiantly fight the aliens But, you are defeated An alien says to you YOU HAVE IMPRESSED US. IT WAS A PLEASURE TO SEE JOIN US, AND TOGETHER WE SHALL RULE THE WORLD. What will you do?

Answers: Refuse. +4 Brave

Question There is a scream from behind a door! How will you react?

Answers: Yank open the door. +1 Hardy, +2 Brave

Question A delinquent is hassling a girl on a busy city street! What will you do?

Answers: Help without hesitation. +3 Brave OR Help, even if scared. +2 Hardy, +2 Brave

https://gamefaqs.gamespot.com/gba/929408-pokemon-mystery-dungeon-red-rescue-team/faqs/40329