You're browsing the GameFAQs Message Boards as a guest. Sign Up for free (or Log In if you already have an account) to be able to post messages, change how messages are displayed, and view media in posts.
Tomato Men (when you first encounter them) have very high defense, so the only way to damage them is by fully charged attacks or magic spells. They only have 40 HP though, so usually they'll be KO'ed by two charged attacks at the most. Charging the sword or spear to level 2 works the best, though.