Happy Birthday, to who? is the tenth episode of Season 4.


The Lab Rats find out Donald knows their birthdays and one of them is coming up. They don't know who, so they break into his computer, but find out a bit too much about themselves.


Tyrel Jackson Williams as Leo Dooley

Billy Unger as Chase Davenport

Kelli Berglund as Bree Davenport

Spencer Boldman as Adam Davenport

G. Hannelius as Elena Davenport

TBA as Dill Davenport


Will Forte as Eddy

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