ok, i made an account on this site just to ask this, i'm trying to make a medium sized tarrasque to possibly use in a campaign at some point, and i was hoping some of the more experienced players could help me with a few issues i'm having

like the fact that i somehow ended up with a medium sized tarrasque with no abilities and a LA of -15, and i have no idea how it happened

if needed i can post up some of what i have so far

thanks in advanced for anything you guys contribute