Re: [Old Report] how unlock the computer scientist?

Lots and lots of luck and lots and lots of coins spent on ZZ packs.  The drop rate is extremely low, you just have to take it fort what it is if you want the legendaries.  Two tips:  One, save up tons of coins for Rux, as he sometimes sells legendary character stickers for 1M coins.  And two, be sure to participate in community challenge.  I have gotten two legendary character stickers from the red community challenge chests.

I've been told that you can also get a sticker from the scientist fun pack when scientist is on hero showcase, of course also with a very low drop rate.  I can't confirm this.