Flim and Flam

Flim and Flam are a pair of unicorn brothers who works as travelling saleponies. They appears in the episode Super Speedy Cider Squeezy 6000, where they try to drive Applejack out of Sweet Apple Acres by using a machine called the Super Speedy Cider Squeezy 6000. They have light grey olive coats and red and white manes, and wear blue and white striped shirts and flat straw hats. The only main difference between them is their cutie marks, their manecuts and Flam having a mustache.

Personality
Flim and Flam are shown to be notorious tricksters and swindlers who tricks ponies into buying their products. They generally show little remorse to their actions, and often flees when the tide turn against them or their swindles is seen through. Due to them using a machine to make cider in the episode, they are sometimes potrayed as good inventors and mechanics, but their machines usually ends up failing or making things worse in the end.

Flim and Flam have also gottens some character growth, where they grow into more honest buisnessponies.

Depicion in Fan Works
Flim and Flam rarely appears in fan works. They usually returns to Ponyville with some new invention and try to sell their products to the population, failing and then fleeing the town. Other times, they appear as more serious compeditors who actually manage to pose a serious treat to the existing buisnesses in Ponyville. The pair are also redeemed at times and ends up doing honest work or helping out at Sweet Apple Acres.

The unicorn brothers are also shown in other places, swindling the local population. Fan works have even put them in Canterlot's court at times for their actions.

Relationships
While it is not stated in the show, Flim and Flam are usually seen as twins due to their similar designs. As brothers, they are generally shown to stick together and care for each other, altough they also argue between each other.

Romanticly, they are usually shipped with Applejack or the Spa ponies, due to them also being shown as twin sisters.