Pliot 1999 Zim's past is not shown.
Born on planet irk maybe with Red,Purple and other smeets in the year unknown.
Zim,Red,Puprle and other smeets Born on planet irk in a unkown year after Invader Blue turned 1 years old.
- Miyuki and Spork are Zim's caring Parents lost Zim on earth as a smeet thus Red and Purple took their place as the tallest for Zim to meet Red and Purple 16 years later.
- Miyuki and Spork knew their Son Zim was born a Menace so they Abandoned him on earth.
- Professor membrain knew about the irkens and stole Zim from planet irk.
- In Nicktoon world Continuity Zim was born on planet irk but grew up at the Nicktoons nursery home.
- in Spongebob speedypants Continuity when Zim was a Smeet/Baby he ran away from planet irk in a baby pod shi…
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