Just a simple HERO deck, this one focusing on fusion summoning Elemental HERO Grandmerge and Evil HERO Inferno Wing!
The main deck consist of the usual HERO goodstuff plus Avian and Burstinatrix. I use two Polys since the ideal stuff is to summon both Sunriser and Grandmerge. I also included a limited Plasma and Dark Law package for when you're required to go first, but make no mistake, this is a going-second beatdown strategy. There's only one of Adusted and Dark Calling each, but I feel that's enough given how easily searchable is.
It lacks in hand traps but makes up for it with plenty of S/T removal for floodgates and Called by the Grave for opposing hand traps since what you want is to get your combo through and not necessarily stop the opponent's.
The Extra Deck is where the real meat is. Our most important card is Xtra HERO Infernal Devicer, who will fetch our vanillas. Grandmerge and Inferno Wing will be our main beatsticks, usually paired with Sunriser. Once Grandmerge destroys a monster, you will tag out to Chaos (be wary of the level restriction!!). I chose Chaos as my prefered tag-out target given his useful negate, but you could make an argument fot not really needing it at that point. To be completely honest with you, I just like Chaos. You could also summon him with Poly or Miracle (yes, you can) given the right situation.
The rest is just more HERO goodstuff: Dark Law because Dark Law, Blast for S/T, Bane for an alternative Dark Calling summon, Absolute Zero/Acid combo for board wipe, Trinity for even more damage, and the rest of the Xtras for more combo and damage.
Lastly, the Side Deck is just "other things you can use" rather than an actually functional Side. Special attention to Nebula Neos who can also be summoned with Grandmerge and possibly give you some really sweet draw power.
If what you want is an actual Side Deck, just think of the usual: hand traps, Kaijus, etc.