Fridge Brilliance
While it borders on Fridge horror, Ik's goofy, upbeat and eccentric personality can be explained that he died at the young age of 14-15 (since he was born in 1981 and died in 1996).
http://tvtropes.org/pmwiki/pmwiki.php/Fridge/TheUpturned
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While it borders on Fridge horror, Ik's goofy, upbeat and eccentric personality can be explained that he died at the young age of 14-15 (since he was born in 1981 and died in 1996).