I know the answers!
Question 1. Who is younger?
The answer is... Luigi!
Question 2. Is the word Mario in Zelda: Seasons?
The answer is... yes! There have always been references to Mario in Zelda games!
Question 3. DK Jr. is now who?
The answer is... Donkey Kong from the Donkey Kong Country games! DK Senior (AKA Cranky Kong) was the original Donkey Kong of the arcade games!
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"Bwa ha ha! Guess who it is, loyal Mario fans...
It is I, King Bowser... ruler of all Koopas, big and small. I have come to take over the Mushroom Kingdom (no, not the place...I mean the WEB SITE!)! Deezer, you will surrender your troops to me, or else you will never see your precious Mario again! Bwa ha ha ha ha ha ha ha ha ha!"