Sucker

just wait and see what its personality is like

Jimmy Neutron

Sucky McSuckface

Googles 'Celebrities with cocaine habit', clicks on a list, and reads the first name... You should name it Robot Downey, Jr.

B1

Robot The Bruce. ... ;)

"SucCleaner"

Inspektor John

Write a bunch of random names on torn pieces of paper. Scatter them all over your house and set the robot loose. Once it's done cleaning, unpack it and read the first paper that comes out of the waste bin inside it.

Roll

Pleasuretron 5000

I always make up some initials that spell out a name, for example my robot is named A. D. A. M. (a dumb ass miscreant) but your mileage may vary