Farewell, My Enemy Commander Heinell (Saraba! Teki Shireikan HAINERU- さらば!敵総司令官ハイネル) - S1.E37

Voltes attacked Heinell's fortress. General Bergan betrayed Heinell and went to Gururu's side. Jangal defended the Underground Castle alone and committed suicide when he was cornered to surrender. Bergan planted a huge Magmait bomb to destroy the Earth. Heinell was forced to escape to Boazan by Kazarin.