I watched it with my three-year-old daughter and she loved it, even though she only knew Batman.
- the imagery is uniform and beautiful
- the characters are interesting, their abilities are used
- the message of the episodes are positive (teamwork, forgiveness, perseverance, friendship)
- the plot is usually well explained, for example what happens to the villains, what their plan is, what happens to them when they lose
- the episodes are short, so I think they can be consumed by the younger age group in terms of complexity
- the whole title is Justin League Action and well the action scenes are fun and well choreographed.