Sei hails from Chile and plays Age of Empires II. Over time, Sei has accumulated 887 matches in Age of Empires II. Sei is most active in the ranked random map team ladder.

Sei has a clear affinity for Saracens, choosing it in 43.9% of their games. Sei wins most often with Mayans—58.3% in 144 games. Across 236 games on Nomad, Sei has a 60.2% win rate.

Sei has the highest win rate in the flank position: 52.7% over 222 games. On the RM Team leaderboard, Sei has a rating of 1008. Sei has a win rate of 50.8% in RM Team (713 games played).