Two entities coexisting in one table

I have stumbled across small problem. I had an abstract class, which aggregated all mutual properties of an object and two concrete classes. One did not need any additional fields, while the other needed another relation. Idea was to create one table and gather both those concrete objects from it. I have never done it before, so it was interesting thing to discover.

I was working on Team abstraction. Team is a collection of heroes. But teams can be lead by someone or self-organized, hence I have three classes, like so:

Notes:

• BaseTeam is an abstract class annotated with @MappedSuperclass. Since it is abstract I cannot instantiate it and with annotation all its properties will be passed to class extending it.
• Team class is a concrete class extending BaseTeam. It inherits all the properties from its superclass and does not define any new. It is annotated with @Entity and @Table with filled name property.  It is important to fill those properties, so concrete class can recognize themselves as one column in database.
• LeadTeam adds some new relation and is also annotated with @Entity and @Table in the same manner as Team class.

What will hibernate do with such a classes? It will create just one table called "Team", and it will be possible to get both instances of Team. 

The database looks like this:

Side note:

Without setting up same names of entities Hibernate thought I want to host two different entities in one table, therefore it created additional column dtype - discriminator, to recognize between two types. It does not suite my case, so I wanted to avoid it, but it's good to know why such a new column can be created.