Neither are the exactly IDEAL boss (https://gamefaqs.gamespot.com/boards/203-cartoons-and-animation/72387012)...but which would you rather work for out of the two (https://animesuperhero.com/forums/threads/mr-slate-or-mr-spacely.4749641/)?

https://images-wixmp-ed30a86b8c4ca887773594c2.wixmp.com/f/cce60a28-157e-4a6d-8b0b-b29cbc17cb0e/d7m8via-f9072ca6-e256-4017-8229-1a31112298e1.jpg/v1/fill/w_1024,h_1024,q_75,strp/mr__slate_and_mr__spacely_by_4and4_d7m8via-fullview.jpg?token=eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJzdWIiOiJ1cm46YXBwOiIsImlzcyI6InVybjphcHA6Iiwib2JqIjpbW3siaGVpZ2h0IjoiPD0xMDI0IiwicGF0aCI6IlwvZlwvY2NlNjBhMjgtMTU3ZS00YTZkLThiMGItYjI5Y2JjMTdjYjBlXC9kN204dmlhLWY5MDcyY2E2LWUyNTYtNDAxNy04MjI5LTFhMzExMTIyOThlMS5qcGciLCJ3aWR0aCI6Ijw9MTAyNCJ9XV0sImF1ZCI6WyJ1cm46c2VydmljZTppbWFnZS5vcGVyYXRpb25zIl19.Tc_MwD_4qjMV-HV50tDVpPrCOkN-6Py3eapu9DwkAK8