Wikipedia:Articles for deletion/Guardian daemon
into List of Advanced Dungeons & Dragons 1st edition monsters. The info is verifiable in authoritative sources and the topic is a reasonable search term; I don't see Guardian demon being a widespread general concept like Guardian angel. Per , merging of verifiable topics is preferable to deletion and -M seems to apply here, ''Pages about non-notable fictional elements are generally merged into list articles or articles covering the work of fiction in which they appear''. Difficulty in maintaining a redirect is an editor problem and not a valid reason for deletion, per 
— User:Mark, 06:15, 5 October 2013 (UTC)
Stance: merge
Cited policy: WP:PRESERVE||WP:ATD||WP:SUSCEPTIBLE (Wikipedia:Editing policy)