Mini-Mark AKA Ken Washio AKA Ace Goodheart AKA Ken the Eagle

Very often, Japanese cartoons are cutted and dubbed and cleaned and changed before they made it to the "West"-ern markets. No blood was allowed, no obvious kills, monsters were not supposed to be too scary etc. Censorship was definitely present with the broadcasters of the time - and many excellent cartoons were simply too much altered and lost most of their interest / story-line due to the process. Translating the name of the characters was also another headache - like in this case...

Ken Washio, Bullmark, Japan, 1970's

Header-card shows him on a bike ?
he should be flying G1, a plane !