i am just wondering if a defense can got below zero or does it stop also would it automaticly be stunned or anyhting.

exp. i use savage land and it gives my charecter +6/-6 but it was only a 4/4 to begin, wat happens? if i was attacking a 3/8

In the rulebook it states that defense that goes below 0 is treated as 0.

that wouldnt cause a character to automatically be stunned...
there are some characters with 0 defense come to start with.

thank you, but who is a char with starting 0 defense?

lol...nobody...thought there was someone..but instead there are just folks wit 0 attack...but even still thats the ruling...NP :)

Note that when adding or subtracting, you use the negative number. If you add 3 DEF to a character with -1 DEF, that character's DEF is 2. For all other purposes of the game, the DEF is zero. So a character with -3 ATK would still stun a character with -1 DEF because these numbers are both treated as zero.