Appearance Prompts:

Obito:

obito uchiha, 1boy, belt, black gloves, sandals, toeless footwear

Tobi:

tobi, 1boy, mask, high collared, black coat, black cloak, black gloves, sandals, toeless footwear

Should work fine in any anime Checkpoint.

It is recommended to use HiRes.fix for best results and Adetailer for full body shots.