"Rokket" is a play on the word "rocket". Its Japanese name, "Vullet", is a corruption of "bullet", playing on the tendency of Japanese to replace "V" sounds with "B" ones. It may also reference the archetype's user in the anime, Varis, who shares a similar gun and ammunition theme in his original Japanese name and the design of his mask. The "Borrel" archetype uses the same play with the word "barrel".
The Italian name, "Mizzile", is a cross between "Missile" and "Razzo" (rocket).
All "Rokket" monsters (except "Rokket Synchron") have the following effects in common:
You can only use each effect of [this card' name] once per turn.
Although at first glance this may not make them viable since it is unlikely your opponent would use their monsters to target them, the Deck allows the player to target them oneself. The Ace Monster of the archetype "Borreload Dragon", can target a Monster on the field and lower its ATK and DEF by 500, and the opponent cannot chain anything to this effect's activation. As such, a common move is to destroy the "Rokkets" when they are targeted by "Borreload Dragon", and activate their effects. Using the "Rokket" monsters in this fashion is analogous to use them as literal cannon fodder. There is also the option of "Borrelsword Dragon" or "Borrelguard Dragon" which work in a similar way to "Borreload".
"Shelrokket Dragon" destroys a monster in the same column, along with all monsters in its adjacent zones.
Even if "Borreload Dragon" is not available, the player can use the likes of "Booster Dragon" which is easier to summon, but less versatile than "Borreload Dragon".
"Borreload Dragon" cannot be targeted by monster effects, which leaves it immune to the effect of "Number 101: Silent Honor ARK", unlike other Link Monsters. It can even give you control of a Monster it attacks during the Damage Step, and transfer it to one of your Link Points, but it will be sent to the GY during the End Phase of the next turn.
With "Supply Squad", "Borreload Dragon" becomes a powerful Draw Engine. The severe Deck Thinning that comes with running a "Rokket" Deck makes "Blasting the Ruins" a viable Trap Card, especially with "Supply Squad". Due to the archetype's synergy with "Supply Squad", lack of searching cards, and focus on Special Summoning from the Deck, "Mistake" is a good addition to the Deck.
Due to the archetype's focus on destroying "Rokkets", which all consist of Dragon Monsters, they can be used in a Graveyard Dragon Power Deck. "Borreload Dragon" would use its effects to target one of your "Rokkets", which would destroy themselves. Not only would this hinder your opponent's strategies, but it would also increase the ATK of your "Blue-Eyes Shining Dragon" or "Red-Eyes Darkness Dragon" by 300 in each instance. The "Rokkets" also replace themselves during the End Phase when they are destroyed on the field, allowing you to keep using "Borreload Dragon" as a deadly weapon. Funnily enough, you could steal your opponent's "Blue-Eyes Shining Dragon" or "Red-Eyes Darkness Dragon" with "Borreload's" effect, giving you a powerful Beatstick for the turn.
While nowhere as strong as "Borreload Dragon", "Triple Burst Dragon" can come in handy if lacking the sufficient amount of Link Material, or at least prove to be a decent backup plan should all of your copies of "Borreload/Sword/Guard Dragon" and/or "Topologic Bomber Dragon" be used up without any options left to bring either back.
"Rokket" monsters tend to get destroyed, either by your opponent or your own card effects such as "Torrential Tribute", therefore, you can play "Keeper of the Shrine" as extra defense or as Link Material.
This archetype, as well as "Borrel", can be considered successors of sorts to the Gun Dragon archetype, taking many visual cues and the overall theme from (mecha, dragons, & guns). They also share the same DARK Attribute, but that's where there similarities end, having a vastly different play style and mechanics.