Bernard Bernoulli is a character in the first and second Maniac Mansion games. He is a nerd who specializes in fixing electronics. He lacks guts and is easily terrified.

Maniac MansionEdit

In the first game, Bernard is the most useful character as he has more capabilities than any other kid. He can fix the telephone in the library to call Edna Edison using the tools. He can also fix the radio in Dr. Fred's room which is used to call the Meteor Police by using the Radio Tube.

In addition, Bernard is terrified of the Green Tentacle and will run away if he is the first kid to encounter him on the 3F landing.

He is also the only character whose portrait changes when he is selected in the beginning of the game: he takes an astonished expression.

In versions of the game featuring the steel security door, if Bernard reads the warning sign he will attempt to crack the security system, fail, and make the house explode.

Day of the Tentacle (Maniac Mansion 2)Edit

By the second game, Bernard is seen living with his friends, Hoagie and Laverne. The second game establishes that he is a "canonical" character of the first game.

Green Tentacle sends with the hamster a message to Bernard that Dr. Fred has them tied up. The three kids revisit the Mansion. He finds the Dr's lab and unties the two tentacles, however he was unaware that the Purple Tentacle was mutated.

When Dr. Fred's Chron-O-John fails, Bernard is stranded on the present and has to find a true diamond to repair it and bring his friends to the present.