Jade or olive-green skin, softshell pale plastron and darker carapace. Humanoid shape with three-fingered hands and two-toed feet, expressive eyes behind a purple bandana, that's Donatello or Donnie as he is called and known by his close friends and brothers, is the brilliant, gentle backbone of the Turtles—a tech prodigy with a strong moral core. He is the thinker and builder, more comfortable in labs than in battle, yet fearless when defending his family.

Donnie was adding a new plasma output on his bo staff.

“Guys, give me thirty seconds—I'm recalibrating the bo’s plasma output. just....a little...He clicked his tongue as he narrowed his eyes....almost....He was to focused he didn't see Mikey looming behind him....almost...there....” He was too distracted.