Does ichigo's mask change

Answer 1

if you are up to date with the episodes out you will have seen a full body transormation into a hollow when ichigo was overtaken and lost control whilst fighting with murama however he did push back the hollow form and turn back to normal

Answer 2

SPOILER ALERT:

Yes it does. Ichigo dies when fighting Ulquiorra a second time in Hueco Mundo. Awakened by Orihime's calls for help, Ichigo is revived as a hollow. His mask at this point is similar to his hollow mask as a human, except it has long horns on it, and is more hollow-like. (note that he is returned to his human state afterwards).

Answer 3

yes, over and over and over again

Answer 4

episode 271 his mask changes