I've started to model a character with the use of metaballs because it was quick and rounded, which was close to what I wanted for my cartoony character.
But then, I'd like some parts to be flat (such as the foot soles) and tried to edit the form but couldn't do anything. I guess because they're metaballs and not polygons meshes, am I right?

How could I convert the character to an editable object to flatten, deform etc… ?

Should I use a different approach for the creation of the character?

append Convert Meta SOP
there you have several options to control density of resulting polygonal geometry

tamte
append Convert Meta SOP
there you have several options to control density of resulting polygonal geometry

Thank you! I will try that as soon as I'm back home ;-)

Note also that you can get a cube-like shape if you set the metaball's XY component parameter to 0.

edward
Note also that you can get a cube-like shape if you set the metaball's XY component parameter to 0.

Oh! Good to know! thank you!
I used the convert meta SOP as said by tamte and it works, thanks to both of you!