So, Does Anyone have any tips for the Radiant Hero of legend, Ike?
For Ike, you should adopt a mostly defensive playstyle rather than one that is aggressive. This means that you should be patient and try to space your attacks as much as possible to avoid punishment, as well as capitalizing on your opponents' mistakes when you see the opportunity.
With that said, here are four things that I would recommend integrating into your Ike gameplay:
1. Ike's F-air and B-air can auto-cancel on a short-hop; you can use the auto-cancel property to aid your spacing and for baiting opponents into your next attack.
2. Throw combos. Ike's are among the most powerful in the game. From 0% to low percent, use D-throw, then follow-up with any aerial. Once your opponent is at a percent where D-throw launches too far to combo, use U-throw, then U-air or F-air; this can be a true combo on fast-fallers, like Fox, at kill percent.
3. Use D-tilt often. It is Ike's fastest tilt, and its mostly vertical knockback trajectory puts your opponent in a vulnerable position, which will allow you to follow-up with another attack. At the right percents, this can true combo into F-air.
4. Use smashes sparingly. They are the worst attacks in Ike's moveset and should only be used for hard reads, or when anticipating a roll.
^-^