None.

Some Physical Fights between the Gummis and Ogres and other enemies. These are mainly mild and comic.

Duke Sigmund Igthorn can be seen laying siege to the castle firing catapults at the castle walls.

"God" & "Damn" are uttered occasionally throughout this series. "Hell" is uttered once in the last sequence of the season 2 episode, "For Whom The Spell Holds". The f-word is faintly heard in the season 2 episode, "Little Bears Lost", as well as implied - but not heard - in the season 5 episode, "Beg, Burrow, And Steal". All utterances are easy to miss.