EC Deilinghofen (1959–1980)

On 28 February 1959 EC Deilinghofen was founded. In 1959 a team from Deilinghofen started in a junior league and reached second place. A year later they took part in the German championship and finished fifth. In the second season, 1960–61, they came in first in North Rhine-Westphalia and were the second best team in the country. Between 1962 and 1964, they were champions of the north of Germany, but they lost the playoffs against the champions of the south. As a result, they missed promotion, although they were eventually promoted.

In 1971 the Canadian soldiers were sent home, and the incoming British soldiers were not interested in ice hockey. The team had to search for a new home. Local politicians wanted to have an arena in Iserlohn. With the agreement of Iserlohn's town council, the Eissporthalle am Seilersee was built.

In the 1976–77 season, Deilinghofen finished two places behind Kaufbeuren in the new Zweite Bundesliga. However, Kaufbeuren waived their right to promotion, and Deilinghofen received the chance to play in Germany's top hockey league for the first time.

The 1987 ECD Iserlohn shirt with Gaddafi's Green Book advertisement

ECD Iserlohn (1980–1987)

In 1980 the club was renamed ECD Iserlohn because of its long history being based there. In the following season, the team was relegated for the first time in its history. Two years later, it moved back up again. The following years were the most successful seasons in the club's history. In 1986 ECD reached the semi-finals in the playoffs with stars like Jaroslav Pouzar and Martti Jarkko. Due to the added expenses created by the addition of these star players, the team president, Heinz Weifenbach, looked for financial help in Libya, where Muammar al-Gaddafi agreed to pay if the team advertised his "Green Book".^[1] On 4 December 1987 they came to an agreement. However, due to negative attention, ECD scrapped that plan a few days later.^[2]

ECD Sauerland (1988–1994)

The next season, ECD Sauerland was founded. They started playing in the Oberliga, although Weifenbach wanted to begin play in the Bundesliga. The club had the same significant financial problems as its predecessors. The 1991–92 season was a catastrophe, so the fans were afraid that the team would not receive a license to continue operating. ECD eventually obtained a license, but went bankrupt a few days after the end of the 1993–94 season.

ECD Sauerland Iserlohn Penguins (1994)

One day later, on 9 April 1994, the ECD Sauerland Iserlohn Penguins were founded, but the peewee players didn't contract in, so the club's history was short-lived.

Iserlohner EC (1994–2000)

Iserlohner EC (IEC) was founded on 20 April in the same year. The new committee wanted to avoid financial difficulties. After one season, the team moved up to the second-tier league. The following two years were more difficult, but new players during this time helped revived the club. In 1997 a new coach, Greg Poss, came to Iserlohn. After three successful years, the club moved up again after purchasing the operating license of Starbulls Rosenheim. 40 years after the foundation of the original team, the arena in Deilinghofen was torn down in 1999, despite protests from many people in Deilinghofen.

Iserlohn Roosters (since 2000)

Iserlohner EC joined the Deutsche Eishockey Liga in 2000 and adopted the name Iserlohn Roosters. A GmbH, which serves to administer the finances and the business organisation, was created for the professional team. The GmbH was named the Iserlohn Roosters GmbH. All junior teams were still under the control of the IEC. The Roosters continually had the lowest budget of all DEL teams, and the media often referred to them as an underdog team. In their first two seasons, the Roosters placed 15th and 12th.

In the 2002–03 season, the team again missed the playoffs by falling just two points short even though they beat the German champion of the year, the Krefeld Pinguine, 8–1 on the last day of the season. Before the next season, Poss left the club and went on to coach the Nürnberg Ice Tigers. Iserlohn named Dave Whistle as new coach, but after only nine games, Doug Mason was his successor. During the lockout season in 2004–05, Mike York and John-Michael Liles came to Iserlohn and helped the team reach 11th place despite still having the smallest budget in the league. York signed with Iserlohn after his old college friend Bryan Adams, who was the captain of the Roosters, talked to him. Brian Gionta also signed, but left without having played due to his wife's pregnancy.

Twelve players left the club in the summer of 2005, but the Roosters were able to make some great moves on the transfer market with the biggest signings being former DEL top scorer Brad Purdie and former NHL player Mark Greig for two years. Nevertheless, they finished in just eleventh place despite having the best power play in the league. In March 2006, Mason left Iserlohn for Kölner Haie, and Geoff Ward came to Iserlohn to coach. After defeating the DEG Metro Stars 5–1 in the opening game of the season in 2006–07, the Roosters were in first place for one week for the first time in their history. After again finishing another season in eleventh place, Ward then left Iserlohn during the summer of 2007 to be an assistant coach for the Boston Bruins of the NHL.

For the 2007–08 season, Rick Adduono became the new coach of the Roosters. The Roosters improved the team by adding Norm Maracle and Bob Wren. After the fifth game, they were in a playoff position and were able to hold on to it the rest of the season. Improved offense was due to Robert Hock and Michael Wolf beginning to dominate the league as native players, breaking the historic dominance of North American players. Wolf was the top goal scorer, and Hock became league top point scorer. The third man in their line was either Tyler Beechey, who was first signed on a try-out contract, or Brad Tapper. The line with Jimmy Roy, Pat Kavanagh, and Ryan Ready also helped the unexpected trip to the playoffs. However, in the quarterfinals they were defeated by the Frankfurt Lions in game 7.

For the next season, the Roosters signed former New York Islanders coach Steve Stirling. The team failed to continue the success they had the year before, and Stirling was fired in February after the team fell out of playoff position. Over the summer many players voiced their critique of Stirling. Assistant coach Ulrich Liebsch became the new head coach, and many key players left the team. Due to the global financial crisis at that time, the Roosters announced that they would look for young, talented players instead of focusing on veterans for the 2009–10 season.

Current roster

Updated 2 October 2023.^[4]

No.	Nat	Player	Pos	S/G	Age	Acquired	Birthplace
74		Marcel Barinka	C	R	22	2023	Prague, Czech Republic
77		Tim Bender	D	L	28	2022	Mannheim, Germany
10		Tyler Boland	C	R	27	2023	St. John's, Newfoundland and Labrador, Canada
22		John Broda	F	L	22	2021	Weißwasser, Germany
18		Eric Cornel	C	R	27	2021	Kemptville, Ontario, Canada
91		Michael Dal Colle	LW/C	L	27	2023	Richmond Hill, Ontario, Canada
15		Florian Elias	C	L	21	2023	Augsburg, Germany
24		Mitch Eliot	D	R	25	2023	Orange County, California, United States
55		Nils Elten	D	L	20	2020	Iserlohn, Germany
36		Brandon Gormley	D	L	31	2023	Murray River, Prince Edward Island, Canada
11		Charlie Jahnke	F	R	25	2023	Berlin, Germany
92		Andreas Jenike	G	L	35	2019	Hamburg, Germany
3		Leonhard Korus	D	L	21	2023	Köln, Germany
16		Hubert Labrie (C)	D	L	32	2021	Victoriaville, Quebec, Canada
19		Drew LeBlanc	C	L	34	2023	Hermantown, Minnesota, United States
71		Yannick Proske	F	R	20	2020	Weißwasser, Germany
17		Emil Quaas	D	L	27	2023	Berlin, Germany
53		Maxim Rausch	D	L	20	2023	Miass, Russia
35		Kevin Reich	G	L	28	2023	Iserlohn, Germany
12		Maciej Rutkowski	C	L	21	2022	Sosnowiec, Poland
8		Cedric Schiemenz	C	L	24	2023	Berlin, Germany
14		Balazs Sebok	C	L	29	2023	Budapest, Hungary
27		Ben Thomas	D	R	27	2023	Calgary, Alberta, Canada
79		Colin Ugbekile	D	L	24	2022	Solingen, Germany
52		Sven Ziegler	RW	R	29	2021	Nürnberg, Germany