Does Mark Have a Vendetta against the Twelve Disciples?

The disciples were Jesus' closest companions during his ministry, the collective Robins to his Batman. As such we might expect them to be more enlightened, more intelligent, more attuned to God's divine plan than other people Jesus' came across.

The Gospel of Mark, however, seems to defy that expectation. Today, we talk about how the author of Mark portrays the disciples, how that treatment advances his aims for the gospel, and whether this portrayal is representative of a personal vendetta.