Bumbeasts are pear shaped creatures. They are a light brown colour, with two darker brown circular stripes on their rear end. They have a long, wiggling, black nose, black eyes, black feet, and appear to be smiling.
Bumbeasts walk horizontally, turning at walls. They are usually located in little alcoves. They also cannot be killed, and so must be avoided. They kill blots on contact, and are the first enemy introduced in Scribble. They only appear in desert levels (levels 1-1 through 1-5).