Konstantinos was raised in the cities of Prosotsani and Kavala in Greece. He started playing online video games at the age of 13, investing heavily into Counter-Strike 1.6. He played CS for the next four years, becoming well known in the Greek scene, eventually becoming a professional and travelling to LANs. After his interest waned through the years, he found League of Legends and enjoyed the MOBA aspect of it, having previously played DoTA. Upon reaching level 30, he found himself focusing on AD in solo queue, rising through the ranks in Season 2. He reached 2200 elo maining Ashe and Tristana.
In the middle of the season, FORG1VEN joined WannaBeez, though only stayed with the team for a month before moving on to Pentakill.gr. With the team, he enjoyed success in minor tournaments, including the EUNE ESL Go4LoL 2012 August. He also competed in the qualifiers for the later cancelled IEM Season VII - Global Challenge Guangzhou with the team. Soon after, FORG1VEN left the team, joining Test Your Limits, a team playing mainly within the Greek competitive LoL scene. During his time with the team he also competed in the LCS ESL Qualifiers. At the end of the season, he went on to rejoin WannaBeez.
Staying almost exclusively in the Greek scene, FORG1VEN continued playing with the team for a few months before joining Mad Gods Gaming. With his new team, he competed in the LCS Summer Ranked 5s Qualifiers. He stayed with the team until late on in the year before joining Copenhagen Wolves, replacing Rekkles. FORG1VEN's first tournament with the team was the International Invitational Tournament 2, which they managed to win, beating Team Dignitas UK in the final. FORG1VEN and CW then followed this up with another win, this time at ASUS RoG Paris Games Week 2013. With the team's roster on a hot streak, they went on to win the EUW Challenger Series Week 14 Cup and the amateur tournament at IEM Season VIII - Cologne, beating Ninjas in Pyjamas in the final.
FORG1VEN and the team carried their form into the next season, winning every game in the group stage in the LCS Spring Promotion, and going on to beat MeetYourMakers in their promotion matchup. This meant that the team would be playing in the Spring Split. The split was not a huge success for the team, however a 6th place finish meant that the team had a spot in the Spring Playoffs.
On April 12th, 2014, it was announced that FORG1VEN violated the LCS ruleset by engaging poor behavior. This behavior included, but was not limited to, in game harassment, verbal abuse, and general in game toxicity. He was fined $ 1,000.
The playoffs were not successful for FORG1VEN and the Copenhagen Wolves, going out in the quarterfinals to Alliance. This meant that they would have to fight for their LCS status in the Summer Promotion. FORG1VEN helped CW to a win in their promotion matchup against Denial eSports.Europe, but this would be his last tournament with the team. As he was replaced as a starter by Woolite, he went on to join Different Dimension, though he was still officially on the roster of Copenhagen Wolves as a substitute.
During his time on the Different Dimension roster, FORG1VEN competed in the ESL Spring 2014, finishing 3rd after Denial eSports.Europe forfeited their 3rd place matchup. He and the team also partcipated in and won Riot Greek Legends 2014, beating Void Gaming in the final of the tournament.
FORG1VEN appeared on the 28th episode of Summoning Insight, and part of the discussion included the rumor that he would be joining SK Gaming. In the episode, FORG1VEN said he only wanted to play for a team that was contending to be the best in its region. The rumor was confirmed on November 24th, when SK announced that FORG1VEN and Fox were joining the team. At the start of the Spring Split, FORG1VEN renamed to FORG1VENGRE.
Due to SK being in 1st place in the Spring Split at the end of week 5, the team were invited to compete at the IEM Season IX - World Championship. After a Round 1 win against the yoe Flash Wolves, SK Gaming lost to GE Tigers in Round 2 of the winners bracket, putting them into Round 2 of the losers bracket. FORG1VEN and SK Gaming were then knocked out by yoe Flash Wolves after losing to the Taiwanese team in their 2nd meeting at the tournament.
SK continued to hold the first-place LCS slot through the end of the spring split and qualified for playoffs with the top seed. FORG1VENGRE himself was awarded the MVP of the split title. However, for the first time in LCS history, a top seed was eliminated in the semifinals, when SK lost to Unicorns of Love 3-2. After the split, FORG1VEN left SK to join Gambit Gaming.
FORG1VEN and the team had an unsuccessful Summer Split. After a rocky early start to the season and a combined 0-4 record in the first two weeks, Gambit improved to fifth place after 8 weeks, with the potential of finishing as high as fourth. However, going into the last week of the split, FORG1VEN received a four-game-long penalty from Riot as the result of toxic behavior in soloqueue. The team eventually finishing the regular season in 8th place with Moopz subbing in FORG1VEN's position, meaning that Gambit Gaming would be playing in the 2016 Spring Promotion. Now with P1noy in FORG1VEN's place, the team faced mousesports, winning the series and securing their place in the 2016 Spring Season.
It was later announced that FORG1VEN had been moved to substitute position and was available for transfer.
At the start of the season, FORG1VEN joined H2k-Gaming after the team were voted to play at IEM Season X - Cologne. They fielded a roster including Odoamne and Ryu from their 2015 roster along with new members Jankos, FORG1VEN, and VandeR. The team beat Cloud9 in the quarterfinals but were then beaten themselves by eventual winners Ever in the semifinals of the tournament.
On February 25th, after a win over Fnatic, FORG1VEN announced in a post-game interview that he had been called to serve in the Greek army for nine months and that the current week (week 7) would be his last. A week later, however, H2k announced that he had been granted a temporary deferment of service.