Prefered Stages

Final Destination

Smashville

Pokemon Stadium 2

Unfavored Stages

Battlefield

Lylat Cruise

Yoshi's Story

Out range and/or use speed
Hammer hits twice in the air, look out for that, but it has a little more ending lag then usual ending lag so go for a tilt punish when they land
Almost all of Kirby's special moves have a lot of end lag. Just wait/bait out their special attacks and punish from there
Try and gimp when offstage due to up B coming back down
Watch for up B landing on stage (some characters can intercept with a wind box)
Be careful when edge guarding; his Up B can spike at any percent