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Jaakko is friends with Daisy, Splatter, Dodge, Arry, Bert, Sidney , Paxton, Norman and Diesel 10.  and enemies with Thomas,Edward,Henry,Gordon,James and Percy. he is mean , devious, rude and evil , Jaakko is mean to  the   steamies he is mean he is also Diesel's brother. he is just like Diesel. which is why he and Diesel realy get along though he does not like steam engines.you could easily tell them apart becasuse Diesel is black and Jaako is blue and come to sodor in July 2 2011

He is a character debuted in Season 30.

Trivia Edit

  • Jaakko was a repaint of a Diesel model.