Darksied avenging Kalibak's death

Why does Darksid want to avenge Kalibak's death. In the comics, Darksied favors Orion over Kalibak because he is the unfavorite. Is Darkseid out of character for avenging Kalibak or does he feel sympathetic about Kalibak's death and feels that Kalibak has finally found approval in Darkseid.

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