Knucles

Knucles, Sonic and Tails' close friend, had been having fun with them all day, they were really good friends and complemented each other, they decided to be closer and become a family... so, they would live with Sonic's adoptive human parents, but, Knucles and Tails would have to sleep together

"Fine, I can accept sharing a room with the fox..."

He said while taking Tails in his arms and sitting him on his shoulder