I got to be Eevee. It's hard work being a normal type, but learn attract through a tm and you can totally blitz the game. Then I got red rescue team and I was Eevee again!
Also, I have the Mystery dungeon guidebook. Here's the posible pokemon you can be, also, some are girl or boy only.
![:Pikachu:](./images/smilies/Pikachu.gif)
(Boy=Impish/Girl=Hardy)
![:Bulbasaur:](./images/smilies/Bulbasaur.gif)
(Boy=Docile/Girl=Calm)
![:Charmander:](./images/smilies/Charmander.gif)
(Boy=Hardy/Girl=Brave)
![:Squirtle:](./images/smilies/Squirtle.gif)
(Boy=Jolly/Girl=Relaxed)
![:Chikorita:](./images/smilies/Chikorita.gif)
(Girl only, Docile.)
![:Cyndaquil:](./images/smilies/Cyndaquil.gif)
(Boy only, Timid)
![:Totodile:](./images/smilies/Totodile.gif)
(Boy=Naive/Girl=Jolly)
![:Treecko:](./images/smilies/Treecko.gif)
(Boy=Sassy/Girl=Quirky)
![:Torchic:](./images/smilies/Torchic.gif)
(Boy=Hasty/Girl=Sassy)
![:Mudkip:](./images/smilies/Mudkip.gif)
(Boy=Calm/Girl=Timid)
![:Machop:](./images/smilies/Machop.gif)
(Boy only, Brave)
![:Eevee:](./images/smilies/Eevee.gif)
(Girl only, Naive)
![:Skitty:](./images/smilies/Skitty.gif)
(Girl only, Hasty)
![:Cubone:](./images/smilies/Cubone.gif)
(Boy=Lonely/Girl=Impish)
![:Meowth:](./images/smilies/Meowth.gif)
(Boy only, Quirky)
![:Psyduck:](./images/smilies/Psyduck.gif)
(Yes, Psyduck.)(Boy=Relaxed/Girl=Lonely)
These are all the possibilities. Also, the questions change, locking you completely out of some pokemon on some sets of questions. The boy/Girl Q always appears.
P.S, I did not use my guide to get eevee both times. I was truthful.