Literature Criticism Online contains collected literature criticism. LCO is an excellent source for locating scholarly online critical analysis of literary characters, themes, etc.
Each of the titles indexed is a multi-volume set of "encyclopedias" of literary criticism, focusing on literature from a particular time period or a particular genre of literature (poetry, short stories, etc.)
Inside each volume, there are large entries (20+ pages) under the name of the author.
Within each entry a group of critical essays and reviews that were previously published in other places (for ex: The Sewanee Review or The Southern Literary Journal) are compiled together. General overview information about the author is also included: their principal works, biographical information, and a general critical response to their work is reviewed at the beginning of each entry.
Start with an Advanced Search to search by Keyword, Name of Work, Person-By or About, Author of Article, etc.
The Gale Literary Indexes compile excerpts of criticism (critical summaries) for a given author's work and are available for poetry and short stories as well as major fiction. Each Encyclopedia set is listed as a "Series". Select one or more sets "by Series" from the drop-down menu or search all sets simultaneously.
In addition to Literature Criticism Online, these EFSC Library databases provides articles focused on Literary Research.