Identify and connect to famous mad scientist

[Edit: sigh Yes, small goofup. Not significant enough to require removing question since enough clues are still available.]

Cracked by udupendra , akhi , Dibyo , KRIK , Raghuvansh , nishansolo and Rithwik K.

udupendra, akhi, Dibyo, KRIK, Raghuvansh, nishansolo and Rithwik K