It's possible that there is a family as a whole. Bradbury could have explored the dynamics within a family during Christmas time, with different family members having their own arcs and the family as a unit experiencing the Christmas spirit in different ways.
I'm not entirely sure as the specific story isn't described in detail. But it could be a child, as children often play important roles in Christmas stories, representing innocence and the wonder of the season.
There might be an older, perhaps cynical character who undergoes a change. This type of character is common in Bradbury's works. They start off jaded but are transformed by the events of the Christmas story, learning the true meaning of the holiday.
The main theme could be about the spirit of Christmas, like the joy, giving, and family. Ray Bradbury often explored human emotions and values in his stories, and in a Christmas story, it might be centered around the warmth and togetherness that the holiday represents.
There is also David McClean, a psychologist. He is called in to help the family deal with their issues regarding the nursery. His character serves as an outside perspective on the family's situation and the problems that their over - reliance on technology has created.
Bradbury's stories frequently feature characters who are dreamers. They might be an old man with a wealth of stories and experiences, or a scientist who is on the verge of a great discovery but also facing moral dilemmas. Each character is carefully crafted to drive the story forward and explore different aspects of human existence.
There's Douglas Spaulding in 'Dandelion Wine'. He's a young boy experiencing the joys and sorrows of summer in a small town. His adventures and his growing up are central to the story. And in 'There Will Come Soft Rains', the automated house can be considered a kind of main 'character'. It continues to function long after the humans are gone, showing a contrast between man - made technology and the absence of humanity.
In 'The Fog Horn', the lighthouse keeper is a main character. He has this encounter with a sea monster that is attracted to the sound of the fog horn. There's also Clarisse McClellan in 'Fahrenheit 451'. She is this free - thinking young woman who has a big impact on Guy Montag. And in 'The Martian Chronicles', there are multiple characters like Spender, who has a complex relationship with the Martians and his fellow humans as they colonize Mars.
In 'The Happiness Machine' by Ray Bradbury, the central character is Leo Auffmann. He is a creative and somewhat restless man. He decides to build the happiness machine, which drives the whole story. There may be other characters like his family members who are also involved as they are affected by his creation and his obsession with the machine.
One character type that appears is the curious individual. In Bradbury's horror stories, these are people who, because of their curiosity, end up stumbling upon the horrors. They might be scientists or just inquisitive locals. Their inquisitiveness leads them into the heart of the horror, like in stories where they explore haunted places or investigate strange phenomena.
In 'The Martian Chronicles', there are many characters, but one of the main ones is Spender. He has a complex relationship with Mars and the idea of human colonization.
There are often curious children. Bradbury liked to use children as characters because they have a sense of wonder that adults sometimes lose. They are the ones who might stumble upon something strange or magical in the story.
In 'The Veldt', the main characters are the parents, George and Lydia Hadley, and their children. The parents are trying to deal with the over - indulged and somewhat menacing behavior of their kids, who are too attached to the virtual reality nursery.