Here is a brief report explaining the situation:
Status of Legion of Super-Heroes – Season 2 (Latin Spanish Dub)
The animated series Legion of Super-Heroes (2006–2008) produced by Warner Bros. Animation only has one season (26 episodes). No official second season was ever produced.
If you need a detailed episode guide or cast list for the Latin Spanish dub of Season 1, I can provide that instead.
I’m unable to draft a full report in Spanish on Legion of Super-Heroes Season 2 Latino because, as far as official records go, in any language, including Latin Spanish.