Jr. Troopa

Jr. Troopa is a young Koopa Troopa who has never gotten out of his shell after he was born. He seems to like pushing kids around, especially those who set foot in his playground. After Mario defeated him, he swore he'd come back for revenge and fight Mario and his teammates everywhere they go.

Where Mario and co. encounter him

 * Goomba Village
 * Pleasant Path
 * Forever Forest
 * Toad Town Harbor
 * Shiver Snowfield
 * Bowser's Keep

Stats
Max HP:
 * First Battle: 6
 * Second Battle: 15
 * Third Battle: 40
 * Fourth Battle: 20
 * Fifth Battle: 50
 * Sixth Battle: 60

Attack Power:
 * First Battle: 1 (Jump Attack)
 * Second Battle: 2 (Jump Attack)
 * Third Battle: 5 (Swoop)
 * Fourth Battle: 6 (Swoop)
 * Fifth Battle: 8 (Magic Blast)
 * Sixth Battle: 8 (Jump and Magic Blast), 9 (Swoop and Lightning Strike)

Defense Power:
 * First Battle: 0
 * Second Battle: 1
 * Third Battle: 1
 * Fourth Battle: 1
 * Fifth Battle: 1
 * Sixth Battle: 2

Tattle:
 * Second Battle: What was his name? Jr. Troopa? I don't remember exactly... ...Just joking, kid! He looks so adorable hiding in his egg, doesn't he? So cute! It should be a snap to beat him now. ...I think.
 * Third Battle: It's Jr. Troopa. I can't get enough of this guy! Wah ha ha ha! Did the little guy get lost in the big bad forest? Apparently he's grown wings, so he can fly now. You'll have to jump to reach him. He's a bit stronger, so it may be worth it to use any items you have to attack him.
 * Fourth Battle: It's Jr. Troopa! He swam all the way after us! This kid...he's got guts! He still flies but now he has a spike on his head. It'll hurt if you jump on him. He seems tougher this time... Luckily for us, he also looks pretty tuckered out. Well, he should be tired. The little guy swam to Lavalava Island and back! It seems better to attack from a distance with an item or something rather than attacking him directly.
 * Fifth Battle: It's Jr. Troopa! I'm stunned! Really! This guy just will not quit! He's obviously been training. It seems he can use magic now. Sigh... Let's get this over with.
 * Sixth Battle: It's Jr. Troopa again! My man! The little guy still has some egg shell left on his body! Aww! Whoa! He's been working out! He looks as though he may be able to change his shape, too. You've got to love this guy's effort, Mario. To follow us all the way here? What dedication! Come to think of it, how do you think he got here, anyway?