How do you get the Pengu Garen Icon?
It was a mission or event reward. Riot's description in the client reads: “Earned by qualifying players in 2026.”
Is the Pengu Garen Icon still available?
Riot does not list the Pengu Garen Icon as a legacy icon.

Pengu Garen Icon is a 2026 League of Legends summoner icon featuring Garen. It first appeared in patch 26.5, released on March 4, 2026. It was a mission or event reward. Its icon ID is 7092.
It was a mission or event reward. Riot's description in the client reads: “Earned by qualifying players in 2026.”
Riot does not list the Pengu Garen Icon as a legacy icon.