Sonic
You make him a bunch of Chili dogs them go for a run.

Tails
You always bring him new parts for new projects. Sometimes you make an inventory for him.

Amy
You plant new flowers every year and when its mother day they're always blooming. Theyre always pink too

Egg man
You look for new info and make new bots. He's always happy with your Eggbot (a robot which he can switch with in emergencies

Infinite
You always make him a new mask or something to make sure that he couldn't be recognized by the doctor

Silver
You make pancakes and watch his favorite show with him

Blaze
You do a fire dance every year in celebration of both the new year and spending another year with her.

Shadow
You have a race. You win almost every year but since it is fathers day you let him win. He's usually not happy (he was the first few times but he found out that you let him win RACE YOUR DAD FAIR AND SQUARE KID)
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Happy mothers and Fathers day Sonic Fans!