Please give the full name of the tallest hero published by Marvel Comics.
the tallest hero refers to MAX(height_cm); published by Marvel Comics refers to publisher_name = 'Marvel Comics'
SELECT T1.full_name FROM superhero AS T1 INNER JOIN publisher AS T2 ON T1.publisher_id = T2.id WHERE T2.publisher_name = 'Marvel Comics' ORDER BY T1.height_cm DESC LIMIT 1