No, it's not. 'A Bear for Miguel' is likely a fictional storybook, as many children's storybooks are based on imagination and creativity rather than real events.
The main characters in 'ilustrado' are likely to include individuals who represent different aspects of the society it portrays. There might be a young, curious protagonist who is on a quest of some sort, perhaps to discover his roots or understand a mystery related to his family or the society. There could also be older, more established characters who act as foils to the protagonist, providing different perspectives on the events and values in the story.