Vivi Is Kevin JR

Birthday Boy Blam and Kevin Jr, in the original inside joke that spawned One Night At Flumpty's, were entirely different characters who decided to try and be the same character but in different times. Also, Flumpty's introduction was finding the two unconcious in a grave, saying "Oh boy! I've always wanted to do this! I know exactly what to do!", grabbing a shovel from nowhere, and burying the two alive under a giant pile of dirt (also from nowhere).