new characters for t shirt

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This customer received 22 character designs from 10 designers. They chose this character design from ElenaGabriela as the winning design.
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Character Design Brief
I need two unique twin characters (one boy and one girl.only minor differences between the two) that can be modified to represent different scenarios, situations, etc.
It could be something like one of the southpark characters or any cute animal. Key message is to keep it simple.
The different scenarios could be.
An Australian, a blind person, a shy person, a footballer, an engineer, a lazy person, a crazy person, a French person, etc.
Because each new scenario will need color to help differentiate, I think there should not be so much color with the base character.
Updates
Think a character like poco yo.
Added Tuesday, May 12, 2015
Target Market(s)
All ages
Look and feel
Each slider illustrates characteristics of the customer's brand and the style your logo design should communicate.
Elegant
Bold
Playful
Serious
Traditional
Modern
Personable
Professional
Feminine
Masculine
Colorful
Conservative
Economical
Upmarket
Requirements
Must have
- one boy, one girl
Should not have
- Not too many colours. no more than 4