Junk " Junk " ( ジャンク " Janku " ) is an archetype of Machine and Warrior monsters primarily used by Yusei Fudo and Bashford in " Yu - Gi - Oh ! 5D ' s " . The Synchro Monster s of this archetype must use " Junk Synchron " as their Tuner monster . The Synchro Monsters are also of ascending Level : with " Junk Warrior " at 5 , " Gardna " 6 , " Archer " and " Berserker " 7 and " Destroyer " 8 , showcasing this archetype ' s adaptability in that it can use either a Level 2 , 3 , 4 or 5 monster along with " Junk Synchron " as its Synchro Material s . This makes " Level Warrior " and a few field control cards welcome additions to a " Junk " Deck . Currently , the non - Synchro Monsters that can be used besides " Junk Synchron " are " Junk Blader " , " Junk Collector " , " Junk Defender " , " Junk Forward " and " Junk Servant " . The latter three each have effects that let you Special Summon them , making it easier to Synchro Summon . Strategy . As the name implies , the focus of " Junk " monsters is utilizing lower Level monsters to build powerful Synchro Monster s . " Junk " monsters are usually used with monsters with low Levels to use as Synchro Material Monster s . One familiar combo is using " Junk Synchron " to Special Summon Level 2 or lower monsters such as " Speed Warrior " and " Quillbolt Hedgehog " from the Graveyard in preparation for Synchro Summons , especially " Junk Warrior " , which gains ATK equal to the combined ATK of all Level 2 or lower monsters you control . Using many low Level monsters also helps when Synchro Summoning " Junk Destroyer " by maximizing its ability to destroy cards on the field . " Junk Archer " can banish a monster until the End Phase , enabling your monsters to attack without worrying about a high ATK monster . " Junk Gardna " and " Junk Defender " serve as great ways to stall for time when you can ' t pull out your better combos . When running low on Synchro Monsters to use you can still get help from your " Junk " monsters by banishing them using the effects of " Junk Blader " and " Junk Berserker " . The effect of " Junk Sychron " can make use of " Doppelwarrior " ( it will Special Summon itself from your hand when you Special Summon a monster from your Graveyard and it can give you two tokens when you use it for a Synchro Summon ) . For example , you could Special Summon a Level 2 Tuner from your Graveyard and Special Summon " Doppelwarrior " from your hand . Then you can Synchro Summon " Armory Arm " and get two tokens . Tune a token and " Armory Arm " with " Junk Synchron " to Synchro Summon a Level 8 monster . Weaknesses . While fast and very proficient in swarming the field , Junk monsters often lack raw attack power : none of them go above 2700 . As such , the Junk archetype is very reliant on using their effects to their fullest potential to gain an advantage . As such , cards that negate effects are a serious problem for a Junk deck , as they ' re forced to rely on their sub - par attack power . This is even more prevalent for the non - Synchro members of the archetype , all of which are almost purely based on getting monsters out on the field for fast Synchro summons . Because of this cards like Discord severely restrict the Junk archetype .