Spike and Pinkie continue their adventures in Season 2, The two-party, fight bad guys, party some more, and have mis adventures with their friends and family
Discord is giving up his role as god of Chaos so he can spend all his time with Fluttershy and picks Spike for the job, Spike uses this to try and get Twilight to treat him as a true equal, and brings a few of his own friends to help him
While The Two Retired Princesses search for the Lamp with a few of it's old masters Spike find a new master in the escaped Criminal Cozy Glow, who is the first master to ever find the one loop hole that allows her to gain more than three wishes.
Spike Pie and Pinkie Pie return from the Grand galloping gala and show Limestone, Maud, Marble, Aloe, and Lotus an Old Scrapbook from when the two were younger and spend the night retelling old adventures from their childhood.
When Spike is accidentally given cosmic power and goes a little nuts as a result, he is trapped in a magic lamp and sent hurdling into the past, forced to grant the wishes of the one who holds the lamp Spike goes on a grand adventure to get back home
Rarity noticed Spike is seeing her less and less and is worried somepony else may have captured his heart, Vinyl notices that Octavia is around less and less and is worried she's out growing her.
Spike's bed isn't the most comfirtable thing and in an attempt to find a better place to sleep he ends up sleep walking and using his friends as beds to find the most comfortable one.
With the beginning of Winter comes a lot of snow related joys, but for Fluttershy it was just a sign that all her Animals friends would be sleeping for a few months she was content to just solder through it then she realized Ponies can pet Dragons
A man wakes up in Equestria as Peridot, he is then forced to go and find an item of power for the one who summoned him if he ever want to go home, and to make thing worse he has to do it while also fleeing from a pink pony determined to befriend him
After meeting the end of his life span, Spike awakens in a new Body, Reincarnated as a Kirin he has one single goal, Figure out how to tell his friends without making them think he/she is crazy
A Robotic Replica of Spike from the future travels back in time to make sure Pound Cake doesn't end up a failure in life. Based very heavily on Doraemon.
Pumpkin Cake looses the Spike plushie she got from the Crystal Empire. While looking for a replacement, the real Spike walks in. Pumpkin then proceeds to follow him around for the rest of the day
20 years ago Spike left Equestria, and now lives in the frozen north, far away from his home and friends, and in these 20 years Spike has become a pure unadulterated badass.