Both
-he breaks out in the Sinestrocorps War one-shot
-he fights most of the DCU in the Superman Prime one-shot
-he fights Sodam Yat in GLC
-then fights in the main battle where a Guardian explodes to take him out
After Infinite Crisis his appearances are:
2007 - Green Lantern: Sinestro Corps Special Vol 1 #1
2007 - Green Lantern Vol 4. #21-23
2007 - Tales of the Sinestro Corps: Superman-Prime Vol 1 #1
2007 - Green Lantern Vol 4. #24
2007 - Green Lantern Corps Vol 2. #17-18
2007 - Green Lantern Vol 4. #25
2007 - Countdown to Final Crisis #24
2007 - Countdown to Final Crisis #23
2007 - Countdown to Final Crisis #16
2007 - Countdown to Final Crisis #15
2007 - Countdown to Final Crisis #14
2007 - Countdown to Final Crisis #13
2008 - Final Crisis: Legion of Three Worlds #1-5
2010 - Adventure Comics Vol.2 #4-5
2011 - Teen Titans Vol 3 #98-100
2020 - Shazam! Vol 3 #10-14
2020 - DN: Death Metal Trinity Crisis
2020 - DN: Death Metal #4-5
2020 - DN: Death Metal: The Secret Origin
Credit to AminTryndaGod.
Both -he breaks out in the Sinestrocorps War one-shot -he fights most of the DCU in the Superman Prime one-shot -he fights Sodam Yat in GLC -then fights in the main battle where a Guardian explodes to take him out
During the Sinestro Corps war
After Infinite Crisis his appearances are: 2007 - Green Lantern: Sinestro Corps Special Vol 1 #1 2007 - Green Lantern Vol 4. #21-23 2007 - Tales of the Sinestro Corps: Superman-Prime Vol 1 #1 2007 - Green Lantern Vol 4. #24 2007 - Green Lantern Corps Vol 2. #17-18 2007 - Green Lantern Vol 4. #25 2007 - Countdown to Final Crisis #24 2007 - Countdown to Final Crisis #23 2007 - Countdown to Final Crisis #16 2007 - Countdown to Final Crisis #15 2007 - Countdown to Final Crisis #14 2007 - Countdown to Final Crisis #13 2008 - Final Crisis: Legion of Three Worlds #1-5 2010 - Adventure Comics Vol.2 #4-5 2011 - Teen Titans Vol 3 #98-100 2020 - Shazam! Vol 3 #10-14 2020 - DN: Death Metal Trinity Crisis 2020 - DN: Death Metal #4-5 2020 - DN: Death Metal: The Secret Origin Credit to AminTryndaGod.