Rotating pitch doesn't work as intended when roll has been rotated

[SaintsRLFCTom]

Hi,
Currently trying to make a character that can rotate in all directions similiar to zero G movement in games like dead space and starfield. Rotating pitch works absolutely fine at first but when I have changed the roll rotation rotating pitch doesn’t
work like I’d like it to.

[pezzott1]

You should look into quaternions for this type of rotation.