HistoryThey are techno-organic humanoid crab aliens with a special weapon that extends a capture tentacle that constricts and neutralizes any special superpower of the person who is captured by it. Their probes mistook Starfire for her sister (since they are almost identical and she had the stolen gem that Blackfire gave to her). After Robin pointed out that there was another Tamaranean on Earth, Cron and Kai took Blackfire into custody and cleared Starfire of any wrongdoing. They have not appeared in the series since.
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