1995–1999; 2001–2003
Changes
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The Big Sister
Logo seen on a poster
Seen on covers for Dexter's Laboratory VHS tapes
"Mandark's Laboratory" logo was used for the episode "Babe Sitter".
Logo seen in the opening and Ego Trip.
Title card (Season 2-4, A)
Title card (Season 2-4, B)
Version of the logo used in the opening of Dexter's Laboratory: Mandark's Lab
Seen in a name spelling promo.
Used in the episode "2Genuises 2Gether 4Ever
Logo used in South Korea
1996–1997
<gallery position="center" bordercolor="transparent" bordersize="none"> Km3.gif|Title card (Season 1) animation.