Ai and Makato "Mako"
Ai and Mako Fast Facts
Ai's Japanese VA:
Makato's Japanese VA: Matsumoto Miwa
Ai and Mako (personally, I prefer "Makato" but his English name is Mako) are Impmon's Tamers. They really loved having him around - Mako even gave Impmon his favourite toy gun - but they kind of annoyed him, especially when they were practically pulling him into two pieces. They were always fighting over who he "belonged to". So he ran away from them. (Just proves how much trouble sibling rivalry causes :P.) They were reunited in the end, though, and got their D-Power.
Ai (the girl) and Mako are sister and brother. According to some sources, they are also twins (which would make sense, I suppose), but Ai is a little taller than Makato.