Black Mokona

Black Mokona is not quite as enthusiastic and energetic as White Mokona, but nevertheless a teaser. He usually calls Watanuki 'Watanuki April Fools' which results in a reaction from Watanuki similar to Kurogane's. Little is known about Black Mokona, except that it is able to see ghosts, something the White Mokona cannot do, and that its main purpose is to stay in contact with the White Mokona, so that Yûko can know where the group is and assist them if necessary. Also, Black Mokona is used for teleporting things to the White Mokona, which it does by swallowing them. Yuko has also remarked that of the two Mokona, the red earring on the white one possesses the ability to enhance magical power while the blue earring on black one has the ability to seal magical power. In chapter 157 of xxxHolic it was shown the sealing ear ring is sealing away both Sakura's memories of Syaoran and Watanuki's memory of his past. It also apparently has the ability to devour spirits and compress them into a ball, although it is not evident if the White Mokona possesses this ability either