Start by getting familiar with their basic body proportions and characteristic features. Study their costumes and poses from official comics or artworks. It takes practice and patience.
It depends on personal preference. Some people might like Marvel superheroes more for their diverse powers and relatable characters. Others might prefer DC superheroes for their classic and iconic status.
The duration of the Lego Marvel Superheroes 2 story really depends on your playing style. If you rush through, it could be shorter, but if you take your time and do all the side quests and explore thoroughly, it could easily be 20 hours or more.
The way to view comics in Lego Marvel Superheroes 2 depends. Sometimes you need to progress through the game to unlock the feature. Once unlocked, look for a dedicated comics section, maybe in the settings or story mode menu.
In Lego Batman 2 set in Lego Gotham City, the story revolves around Batman's efforts to keep the city safe. He teams up with Robin and other heroes. They have to deal with the likes of The Joker and his devious plans. There are also side stories involving the other characters in Gotham, and the whole thing is filled with the charm of Lego building and play. For example, there are parts where they have to use Lego gadgets to solve problems and progress through the story.
DC Comics has a vast array of superheroes. There are so many that it's almost impossible to put a specific number on it. However, it's safe to say there are many hundreds, each with their own unique powers and storylines.