Scrolling down through his twitter, it looks like the initial thing he was reacting to was the digimon entry on the previous page.
"That is a fake. Where'd you find that? We don't license any Digimon stuff. Bizarre. I've let our lawyers know. 2:31 PM Nov 24th from web "
"That is a fake. Where'd you find that? We don't license any Digimon stuff. Bizarre. I've let our lawyers know. 2:31 PM Nov 24th from web "