Unidentified manga

1.  Looks like the same artist for Fist of the North Star.  A guy is in the desert, hanging on an iron ball as someone impales his chest trying to make him let go.  After he wins, he fights through more opponenets until fighting an Egyptian style mummy who wraps him up.

2.  A boy who frequently shows his PENIS is riding on turtles attached to leashes, and showing his butt to other girls.  This one was for kids.

3.  SD Gundam sized humans are fighting each other and merging or fusioning, and continue fighting.  Everyone has a similar character design with a sort of circular large head and adorning hair or crown.  Popular with kids for a while.

These make no sense to me. Have you got pictures to post in /a/? That might help.