"...Dead Devil was a proposed rival Turbo, being a clumsy dare devil type who was so bad at his job he apparently died. His purposed personality was loud, arrogant, stubborn and flamboyant, but ultimately he was coded to be the opposite of Turbo.
Unfortunately Dead Devil was conceptualized late into development and was haphazardly patched in and only saw a limited release to certain cabinets. Due to being added so shoddily he suffered from severe bugs and glitches.
Mainly audio/ volume bugs, resulting in audio being to quite, loud, or distorted; and a persistent inability to actually say "Turbo." Collision issues, resulting in him phasing through other racers, barriers or getting caught on invisible blocks. An inability to understand complex inputs. And memory allocation issues. His bugs resulted in an unpleasant learning curve that turned some players away, but some saw the value of gliched runs.
DD was axed not to long before the rest of the series was due to competitor cutting Turbotime out of the market. All that is left of him is concept art and rare surviving arcade cabinets..."