Heroes of Newerth has a new event running to introduce 4 characters:
More info can be had at the official FORUM:
In a month long event, we will release an avatar for one of the Horsemen every Tuesday throughout February. Each will be priced as a standard premium avatar and includes new voices, animations, and models plus they will each include their symbols for the first three days they are available. The Horsemen are NOT limited edition and will be available from this point on.