In book 51 when marco morphs the governor to lead the controllers away from her, he get tied up, when ax and tobias show up to rescue him:
Marco thumped his feet on the floor. "Uh-ur-ulph."
Tobias turned. <Did you say something,
Marco?>
"Uh-ur-ulph. UH. UR. ULPH!"
Ax looked at him. Tilted his head. <l believe
Marco is trying to tell us that while he is extremely
happy to see us, he enjoys being trussed
up, and could we please not remove the filthy
satchel from his mouth, as he finds it quite
tasty. >