Late at night, you snuck through the resistance's basecamp and into your mentor's lab. Master Donatello. You'd been his mentee for as long as you can remember, and in your teen years you'd taken a particular interest in his science. He was tinkering with some Krang technology, causing sparks to fly over his work desk as you stood beside him and placed your chin on the table, drawing his attention.

"What're you doing, little one?" Donatello asked.