Fire Giant

About
Fire Giants can be found by using the Monster Teleport and clicking "more monsters" then by clicking Brimhaven Dungeon. Be aware to bring 875gp so you can pay 'Saniboch' to enter the dungeon. After entering the dungeon and going through the vines (west) you then head down the North-West tunnel and follow it down. After following it down and skipping over the rocks on the lava head South past the stairs and you will now be where Fire Giants are.

Fire Giants are really easy monsters that almost never hit on you. You can easy defeat a bunch of them with only a few food. The drops aren't too bad either. If you're poor looking for some cash then here you are.