Is it possible that Kenny Carr of the Martian Lancers was originally Denny Scott of the Bengal Lancers? I just read a Denny Scott story stories in Mystery Men #1, and the art, setting, and general tone look awfully similar. It wouldn't be that hard to change "Denny Scott" to "Kenny Carr" (especially when everything's in all caps).
I'm not sure how kindly Fox Features would've looked on seeing one of their stories re-lettered and sold to Fiction House, but I don't actually know anything about either company, so it's possible they merged or something before the reprint occurred.
Anyhow, I'm gonna glance at the other Denny Scott stories on the archive to see if any of them look familiar.
Link to the book:
Planet Comics 04 (paper/3fiche)