Fuggler Funny Ugly Monster Ninja Turtles Special delivery Nickelodeon Plush Figure Collection Donatello is more interested in inventing new and dangerous weapons rather than using them. He wants to help his brothers but is a nervous turtle, believing that as the ‘brains of the operation’ he should avoid missions to provide his brothers with the best arms possible. Donatello can often be found bent over his desk designing new arms for his brothers or testing them out on unsuspecting victims – beware!