Cyberdarks

Cyberdarks are an archetype used by Zane Trusdale in the anime, they are DARK and Machine (you could have guessed that by the name, LOL), but they have no direct synergy, except that for the fusion monster, because they work mainly with the dragon monster.

There are 4 Cyberdark monsters, Cyberdark Horn, Cyberdark Edge and Cyberdark Keel, plus a fusion monster, Cyberdark Dragon. All of them have an effect in common: When this card is Normal Summoned, select 1 level 3 or lower Dragon-type monster from your grave and equip it to this card. This card gains ATK equal to the equipped card's ATK. [...] If this card would be destroyed by battle, the equipped monster is destroyed instead.
The only one that has some differences is Cyberdark Dragon, given that you can equip a dragon-type monster no matter of his level. On their own they are pretty weak, simply a veiler or a fiendish chain can kill 'em, and if you can successfully use their effect, you won't gain big advantages, except a monster with 2300 ATK more or less. So what is the best way to use them? With monster that have their effect while equipped. Don't even ask, the first one you think of are Dragunities.

You can NS Horn, equip Phalanx, SS Phalanx and go into brionac, gaia or some other level 6 synchros, or go into aklys, gain a respectable 1000 boost, reaching 1800, and when the cyberdark monster should be destroyed, you can destroy aklys and an opponent's card.
But this isn't that good, you could have used dragunities monster using their own "riders" and you could have synchro climbed, too, so what is the point in using them? Well, for fun is an obvious response, but there are other reasons. Dark Simorgh. Yeah, lockdown opponent's traps isn't that bad and he is really easily summonable in here. You can use a Cyberdark monster and phalanx to go into brionac, bounce nasty things or use him as a bait for bottomless and solemn, then summon dark simorgh using the two materials.
They are level 4, DARK and machine, you can easily think of black salvo to go into easy level 7 synchros. You can send them to the grave with the combo future-zephy-plague-brionac, but you should build a pretty random deck with some dragunities, cyberdars, blakwings, zombie and heroes, pretty strange, isn't it?

You can easily use Deck Devastation Virus to control the opponent, too.

Overall: deck isn't good, but for sure it is fun. If it would be playable in some meta, well, it isn't in this for sure. Aside that, it is really funny.