Which MLB team's mascot is Gapper?

In which division do the Washington Nationals play? Which MLB team's mascot is Screech? Which MLB team's mascot is Clark? In which division do the Cincinnati Reds play? In which division do the Milwaukee Brewers play? Which MLB team's mascot is Bernie Brewer? In which division do the Pittsburgh Pirates play? Which MLB team's mascot is Pirate Parrot?