How do feel about Blackberry x Onion and Red bean x Snow sugar? :D
Black berry and onion are LOVELY, I'd say blackberry is the gentle 'older sister' kind of cookie to lil ol' onion,probably holds her hand and knows her favorite snacks. And I think onion lets down her usual very scaredy demeanor around blackberry,because she feels safe,and likes to nake blackberry feel loved. They brush each others hair before bed!!
Red bean is like,the cool friend and snow sugar is just awed at their skills,trying to impress them himself,once sugar's powers with snow show themselves he insists on going with red bean on their work trips with the penguins. Red doesn't really believe in magic at the start,but finds it to be so much easier to go in trips with sugar that they call him their 'good luck charm'
once the magic IS explained, the nickname still sticks,though!