yeah, early markerbob is the one that looks the most like season 1, but it's my least favourite stage
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I think the markerbob stages should be split into these to to make the major stages slightly more specific:
Prototype:
Hooky
Karate Choppers
Mermaid Man and Barnacle Boy II
Early (very similar to season 1 except digitally coloured):
Bossy Boots
Life of Crime*
Big Pink Loser
Imitation Krabs
*Life of Crime uses the transition markerbob design in a few scenes
Transition (the lines on SpongeBob's body are less rough, but he's still asymmetrical and rectangular):
I'm Your Biggest Fanatic
Dumped
Shanghaied
Pressure
Welcome to the Chum Bucket
Transition 2.0 (this bridges the gap between transition and full markerbob stages):
The Fry Cook Games
Full Markerbob version 1 (can be distinguished most easily by season 2 colour palette but with SpongeBob being proportionately square):
As Seen on TV
I'm With Stupid
SpongeBob, Sandy, and the Worm
One Krabs Trash
Squid on Strike
SpongeGuard on Duty
Snowball Effect
Can You Spare a Dime?
My Pretty Seahorse
Full Markerbob version 2 (cooler colour palette, slightly revised design):
The Bully
Krusty Krab Training Video
Squilliam Returns
New Student Starfish
Wet Painters
Full Markerbob version 3 (SpongeBob's inward facing cheeks become way more common):
Missing Identity
Mid-Life Crustacean
Krabby Land
The Camping Episode
Pranks A Lot