Domo Japanese Attache Mug Dark Horse Domo Mugs Add some Domo-kun to your morning cup of coffee! This Domo Japanese Attache Mug features the funny and toothy weird little bear-thing on this black mug wearing a samurai outfit and sporting some swords. If you love Domo and the Japanese agronomie, then this awesome mug is for you! Microwave and dishwasher safe. Ages 14 and up.