Met after being sucked into a hyperspace distortion

He was being bullied by the other Mimikyu for being shiny 

Clung to Ducky's foot when Ducky found him

Ducky rarely has him battle because whenever his disguise is broken, he runs off the battlefield and back to Ducky and sobs

He’s very insecure because of being shiny and thus not looking like Pikachu like other members of his species

Very jumpy and paranoid due to being attacked and bullied

Often allows Ducky to hold onto him as if he were a plushie, though the first time Ducky tried, he almost fell out of his disguise, so Ducky sewed a cloth platform to allow the actual pokemon inside to stand on and be supported while still being able to enter and exit the disguise

• When doing the above, Ducky caught a glimpse of Patch’s true form, but quickly looked away out of respect for Patch, ensuring to make sure he knew Ducky was only looking away because he knows other members of his species don’t like being seen. Patch basically climbed up onto Ducky’s arm and nudged him, making Ducky think Patch was under the cloth again, though he wasn’t. Ducky looked at Patch again and Patch let the former see his true form because he trusts Ducky. Nothing happened as a repercussion due to the trust formed between the two. 

  • (See "Mimikyu's True Self" headcanon)

Patch tries to befriend other fairy types, but never does super well at it, being a ghost type and very shy

Pulls Ducky around to get to what he needs/wants

If they want something intangible, he tells Winston, and Winston will tell Ducky