Character doesen't show up

I’m having a problem with my AR app, I have an animated character that I’ve imported and inserted into the scene along with several objects. The character is moving as it should and looks like all the other objects in the scene however when I launch the app on my Android everything is there except the character. I’ve tried re importing, assigning different textures to it and even completely different characters and nothing will show up. I have no idea what to do at this point, can someone please help!!