Mavrias playing for Panathinaikos in 2011
|Full name||Charalampos Mavrias|
|Date of birth||21 February 1994|
|Place of birth||Zakynthos, Greece|
|Height||1.77 m (5 ft 9 1⁄2 in)|
|2014–2015||→ Panathinaikos (loan)||9||(1)|
|2016||→ Fortuna Düsseldorf (loan)||15||(1)|
|* Senior club appearances and goals counted for the domestic league only and correct as of 21:33, 11 February 2017 (UTC).
‡ National team caps and goals correct as of 18 November 2014
Mavrias joined Panathinaikos' youth academy in 2007, aged 13, and was promoted to the first-team squad in 2010, after signing a professional contract in the previous year. On 20 October 2010 he made his first-team – and UEFA Champions League – debut, playing the last 12 minutes of a 0–0 home draw against Rubin Kazan, thus becoming the youngest Greek ever to appear in the competition, and the second youngest overall (only behind Celestine Babayaro, being surpassed later by Alen Halilović and Youri Tielemans). Four days later he made his league debut, again as a substitute in a 0–1 loss at AEK.
Mavrias scored his first professional goal on 18 February 2012, netting his side's last of a 2–0 success at Ergotellis; he scored his first European goal on 31 July 2012, again netted the last of a 2–0 win at Motherwell in the first leg of the third qualifying round of the Champions League, one minute after coming onto the pitch as a substitute.
On 22 August 2013, Mavrias joined English Premier League side Sunderland on a four-year contract, for an undisclosed fee, rumoured to be £2-3 million. However, he was left out of the squad to play Southampton due to lack of match fitness.
Mavrias made his debut five days later, coming on as a second-half substitute in a 4–2 home success over Milton Keynes Dons, for the campaign's Football League Cup. He scored his first goal on 25 January of the following year, netting the winner against Kidderminster Harriers in the fourth round of the FA Cup.
On 2 February 2015, it was confirmed Mavrias had joined his former club Panathinaikos on loan until the end of the 2014-15 season.
Mavrias returned to Sunderland where he has been training and playing for the Black Cats Under-21s – and is understood to have impressed the club’s coaching staff with his attitude and contribution. But Mavrias has not come close to being included in the first-team squad, however is not bitter over seeing his career stall on Wearside. “I took the decision to leave Panathinaikos and go to Sunderland, and I think anyone in my position would take this decision,” he told the Greek press.  On 9 January 2016, almost two years after his last match with the first team, Mavrias entered the game in second half as a substitute in a 3-1 away loss against Arsenal for FA Cup. 
He was loaned to Fortuna Düsseldorf on 27 January 2016. Mavrias - who has 18 months remaining on his Sunderland contract - now has a chance to play regular first-team football after joining Dusseldorf until the end of the campaign, with a view to a permanent switch next summer.  On 6 February 2016, he made his debut with a club, in a 0-1 home loss against Heidenheim.
Mavrias performance in Düsseldorf was satisfying, leading the club to set an offer for the Greek international winger. Unfortunately on 24 June 2016, Sunderland reject Fortuna Düsseldorf's lower bid than the £400,000 clause to convert the loan into a permanent switch. 
On 6 September 2016, after 3 seasons spent playing for Sunderland, only 7 official caps overall collected as a Black Cats man, plus 2 experiences as a loanee (at Fortuna Düsseldorf and Panathinaikos), the Greek international winger has officially joined Zweite Bundesliga side Karlsruher for a three years' contract. On 10 September 2016, he made his debut with the club in a 4-0 away loss against Union Berlin.
- As of 11 February 2017
|Club||Season||League||Cup||League Cup||Continental [A]||Others [B]||Total|
- A. ^ Includes appearances in the UEFA Champions League & UEFA Europa League.
- B. ^ Includes appearances in the Superleague Greece Play offs.
- "Premier League Player Profile Charalampos Mavrias". Premier League. Barclays Premier League. 2015. Retrieved 17 January 2015.
- "Stalemate frustrates Panathinaikos and Rubin". UEFA.com. 20 October 2010. Retrieved 8 April 2014.
- "The UEFA Champions League's youngest players". UEFA.com. 2 October 2013. Retrieved 8 April 2014.
- ΕΡΓΟΤΕΛΗΣ Δ. ΕΝΩΣΙΣ - ΠΑΝΑΘΗΝΑΪΚΟΣ [Ergotelis D. Enosis – Panathinaikos] (in Greek). SuperLeague Greece. 18 February 2012. Retrieved 8 April 2014.
- "Motherwell 0–2 Panathinaikos: Champions League party gatecrashed by Greeks – SPL". Scotsman.com. Retrieved 2012-08-02.
- "Greek international signs". Sunderland A.F.C. 22 August 2013. Retrieved 22 August 2013.
- "Sunderland sign Greece winger Charis Mavrias from Panathinaikos". Sky Sports. 23 August 2013. Retrieved 8 April 2014.
- "Sunderland 4 – 2 MK Dons". BBC. 27 August 2013. Retrieved 27 August 2013.
- "Sunderland 1-0 Kidderminster Harriers". BBC. 2014-01-25.
- "I don't regret joining Sunderland, claims international winger". www.sunderlandecho.com. 17 November 2015.
- "Arsenal vs Sunderland 3-1". www.arsenal.com. 9 January 2016.
- "Fortuna leiht Charalampos Mavrias aus" [Fortuna loans Charalampos Mavrias] (in German). Fortuna Düsseldorf. 27 January 2016. Retrieved 27 January 2016.
- "Sunderland continue January sales after offloading winger". Retrieved 1 October 2016.
- "Sunderland reject cut-price German bid for flop Charis Mavrias". 24 June 2016.
- "Στην Καρλσρούη ο Μαυρίας". 6 September 2016.
- "C. MAVRIAS". Soccerway. Retrieved 24 June 2015.