so at a certain part of lego batman 2 you  see brainiac looking  at a earth  and  saying   i  have  located  it.  so  that  means  lego  batman  3  will  come  in  some  years  and  could possible  be  named when  brainiac  attack.  but  this  is just  a  well  edgucated  prediction.  but  it  most  likely  will  happen  unless  wb  and  dc have  a  problem   along   the  way.