Question: Which DC superhero who was created by two high school students from Cleveland, Ohio has appeared in intercompany crossovers?

Context paragraphs:
Wethersfield High School (Illinois): Wethersfield High School, also known as Kewanee (Wethersfield) High School, is a public four-year high school located at 439 Willard St. in Kewanee, Illinois, a city in Kewanee and Wethersfield Townships of Henry County, Illinois, in the Midwestern United States.  Wetherfield High School is part of Wethersfield Community Unit School District 230, which also includes Wethersfield Junior High School, and Wethersfield Elementary School.  The school is combined with the Wethersfield Junior High School to form Wethersfield Junior-Senior High School.  Furthermore, Wethersfield Junior-Senior High School is co-located with Wethersfield Elementary School.  Because all students attend the same academic center the school prides itself in getting to know the students over their 13 years of attendance.  However, academics, athletics, and activities remain mostly separate and inline with comparable elementary, middle, and high school curriculum.  The campus is 40 miles northeast of Galesburg, Illinois, 44 miles southeast of Moline, Illinois, and serves a mixed village and rural residential community.  The school is one of two high schools in the city of Kewanee, the other being Kewanee High School.  The school is within the Davenport-Moline-Rock Island, IA-IL metropolitan statistical area.

Lakeside High School (Ashtabula, Ohio): Lakeside High School is located in Saybrook Township, near Ashtabula, Ohio, and is the only high school in the Ashtabula Area City School District.  Formed in 2001, it was a merger of the two high schools which had previously existed in the district, Harbor High School and Ashtabula High School.  For its first few years of operation, ninth-grade students were taught in the old Harbor High School, while 10th-12th grade students attended the old Ashtabula High School.  In 2006, a new building was opened.  This new building is the first of a total of seven new campus style school buildings to be erected in the area.  The next to be built will be Lakeside Elementary School Campus School, which will be located a few miles away from the high school.

Cedar Cliff High School: Cedar Cliff High School is located in Camp Hill, Cumberland County, Pennsylvania, United States, and is older of the two high schools in the West Shore School District.  It was formed in 1960 with the merger of West Shore High School and New Cumberland High School.  The entire West Shore School District attended Cedar Cliff until fall 1965, when Red Land High School opened.  In 2017, the school had 1,273 students enrolled.  In 2011, the school had 95 teachers yielding a student teach ratio of 14:1.  According to a 2011 report by the Pennsylvania Department of Education, eight teachers are considered "Non‐Highly Qualified" under No Child Left Behind law.The Cedar Cliff mascot is The Colt, and the school colors are navy blue, white and gold.  The Pennsylvania Department of Education has set the tuition for non-resident and charter school students at $8,969.40.

Hellboy: Hellboy is a fictional superhero created by writer-artist Mike Mignola.  The character first appeared in "San Diego Comic-Con Comics" #2 (August 1993), and has since appeared in various eponymous miniseries, one-shots and intercompany crossovers.  The character has been adapted into two live-action feature films in 2004 and that starred Ron Perlman in the title role, and two straight-to-DVD animated films, as well as three video games – "", "", and recently as a to-be-released playable character in "Injustice 2".

Pickerington High School Central: Pickerington High School Central is a public high school in Pickerington, Ohio.  It is one of two high schools in the Pickerington Local School District.  Their nickname is the Tigers.  The school is called Central by most and is the oldest of the two high schools.  Prior to the opening of Pickerington High School North, it was known simply as "Pickerington High School".  Pickerington High School Central was known as Violet Township High School from 1906 to 1939 and as Pickerington High School from 1940 to 2002 before being renamed as its current title as Pickerington High School Central.  Before that time there were many schools in the Pickerington/Violet Township area, including the Pickerington School (c.1883), a two-story, two room school that was built to replace the original building, which now houses Heritage Elementary.

Superman: Superman is a fictional superhero appearing in American comic books published by DC Comics.  The character was created by writer Jerry Siegel and artist Joe Shuster, high school students living in Cleveland, Ohio, in 1933.  They sold Superman to Detective Comics, the future DC Comics, in 1938.  Superman debuted in "Action Comics" #1 (cover-dated June 1938) and subsequently appeared in various radio serials, newspaper strips, television programs, films, and video games.  With this success, Superman helped to create the superhero archetype and establish its primacy within the American comic book.  The character is also referred to by such epithets as the Big Blue Boy Scout, the Man of Steel, the Man of Tomorrow, and the Last Son of Krypton.

Intercompany crossover: In comic books, an intercompany crossover (also called cross-company or company crossover) is a comic or series of comics where characters that at the time of publication are the property of one company meet those owned by another company (for example, DC Comics' Superman meeting Marvel's Spider-Man, or DC's Batman meeting Marvel's Wolverine).  These usually occur in "one-shot" issues or miniseries (comics).

Ohio Hi-Point Career Center: The Ohio Hi-Point Career Center is a career–technical school that provides career–technical training to high school students and adults in west-central Ohio.  Founded in 1974, Ohio Hi-Point (OHP) Career Center in Bellefontaine, Ohio, is a two-year career-technical school district serving 11th and 12th grade students in 14 partner school districts covering five counties, which comprises the career-technical planning district (CTPD).  Students may also opt to remain at their partner school and specialize in one of Ohio High-Point’s fifty-two satellite programs.  Career-technical programs offered at OHP are in the career fields of agriculture and animal science, arts and communication, business, engineering and manufacturing, health sciences, human and public service and transportation.  The high school services students from Bellefontaine High School, Benjamin Logan High School, Indian Lake High School, Waynesfield-Goshen High School, Upper Scioto Valley High School, Riverside High School, Mechanicsburg High School, Triad High School, Kenton High School, Ridgemont High School, Urbana High School, Marysville High School, West Liberty-Salem High School, and Graham High School.

Winslow High School (Maine): Winslow High School is a four year public high school located in Winslow, Maine.  It is a part of Maine AOS 92 - Kennebec Valley Consolidated Schools (formerly of Maine School Union 52) along with the city of Waterville, Maine and the town of Vassalboro, Maine, and is one of two high schools in the School Unit (the other being Waterville High School of Waterville).  Winslow serves the community of Winslow and is open to high school students from the towns of Vassalboro, and China, Maine (of Regional School Unit 18) at a tuition cost since there is no public high school in either town.

Union Hill High School: Union Hill High School was a public high school serving students in grades 9–12 from Union City in Hudson County, New Jersey, United States, operating as one of two high schools of the Union City Board of Education, an Abbott District.  The school was built in—and named for—what was formerly Union Hill, New Jersey, a municipality which merged with West Hoboken in 1925 to form Union City.  Until 2008, Union Hill was one of the city's two high schools, with the former Emerson High School the other.  The Union Hill and Emerson campuses continued to serve high school students for an additional year as separate campuses of the new Union City High School, after which that school's main campus was completed and both schools were converted to their current designation.  The building that housed Union Hill High School is now Union Hill Middle School and houses students in grades seven and eight.

Supporting paragraphs: Intercompany crossover Superman
Answer: Superman