Mustadio is still an Engineer and Agrias is a Holy Knight but the jobs are changed some. Orlandu is titled as a Thunder God now and gets some magic-based skills to go with the new title, though he has lost most of his swordskills. Meliadoul is an Azure Knight now, she keeps her equipment smash skills but they no longer require a sword to use and in addition to those she can learn monster skills when hit with them. Beowulf is actually unchanged. Cloud has been removed entirely and replaced by Cyan. Byblos and Worker 8 are mostly unchanged. Byblos' Energy skill I think it is heals MP instead of HP now due to a formula change. As for 'pets' I'll assume you mean monsters. I haven't gotten around to modifying those seriously yet, though some have been changed a small bit to keep up with the other changes to skills in the game. They're still close to vanilla monsters for the most part right now, but an update on them is in the works.