A Cactus Monster girl I drew a little back in 2009 using MSPaint.

"A Cactus girl who roams the desert, and knows the location of every Oasis. She's extremely nice and will help anyone who is thirsty. If she finds dehydrated humans & animals she will give up some of her stored water to quench their thirst/save their life. It keeps her from Overhydrating and helps the life of the desert.

All of this earned her the Nickname Watermelon."