Mojica is generally considered the "discoverer of CRISPR". Douda and Charpentier took that knowledge and made a specific genome editing system based on bacter

Mojica is generally considered the "discoverer of CRISPR". Douda and Charpentier took that knowledge and made a specific genome editing system based on bacterial enzymes (Cas9) and demonstrated it working in bacteria. Zhang is generally considered the person who made it work in eukaryotes.