Morphtronic

Morphtronics, known as Deformers in the Japanese versions, are an Archetype of monsters debuting in Yu-Gi-Oh! 5D's. They are used by Leo (Rua in Japanese) in the anime, and were introduced in the Set "Crossroads of Chaos". They're continued in the sets, Crimson Crisis and Raging Battle. Their effects are dictated by their Battle Position.

They are depicted in how they "morph" when they change their Battle Position, which changes their effect and appearance (humanoid form in Attack Position; item form in Defense Position). They transform into small household items, like magnets and mobile phones. Despite their appearances, Morphtronics are not all Machine type monsters and they also represent a wide array of Attributes. These cards may be based on the entire transformers toyline that are still very popular.

Morphtronics are low in Level and have low ATK and DEF, but often have effects that can rapidly boost their collective power. Because of their low levels they benefit from cards such as Gravity Bind and Level Limit - Area B. They also benefit from Light of Intervention so that they can be Normal Summoned in face-up Defense Position.

Play Style
Another good strategy is to swarm the field with 2 Magnen, Datatron, Boarden and Clocken (DEF) with the magnet lock, wait 6 turns and get 6 morph counters on Clocken while inflicting 300 points of damage to your opponent with Datatron, then Tribute Clocken for 7000, 8800 damage total.

For an almost indestructible combination have Cameran, Magnen and Boarden all in defense mode. The only things that can break this combo is Lightning Vortex, Torrential Tribute, etc. Each monster protects the others from destruction and leaves you with space to summon LP damage dealers like Clocken and Datatron or card destroyers like Slingen without a hassle.

An easy way to quickly swarm the field with Morphtronic monsters is to use Inferno Reckless Summon in combination with summoning abilities like Celfon, Cameran, Scopen and Junk Box.

Morph Counter
Morph Counters are a great addition to the Morphtronic series. With cards such as Morphtronic Map and Morphtronic Clocken Morph Counters can turn into high damages to your opponent. A good way to deposit Morph Counters into Morphtronic Map is through cards like Gadget Driver, Morphtronic Monitron, Labyrinth of Nightmare (Card), Stumbling, Zero Gravity, Desert Sunlight, Book of Moon, Enemy Controller, or Windstorm of Etaqua.