Beakman created Lester the way Frankenstein created his monster.
Lester neither looks nor acts like an ordinary rat.- That's because he's a guy in a rat suit. Beakman created him like your Mom created a vampire, zombie, or M&M at Halloween.
- Come on! I guess you think "our parents" give us presents on Christmas too?
Beakman's offscreen experiments are lethal.
"We're gonna need another cute assistant..." Beakman is a Time Lord.
The Information Center is a TARDIS, and zips through time to get all those Famous "Dead" Guys.