It's a Toobworld Dynamic rule that publicity pictures and screen captures from other TV shows cannot be used to illustrate "What If?" scenarios for other TV characters.
That's probably confusing, isn't it? Here's my usual example which will hopefully make it clearer:
This is from the first 'Columbo' pilot, "Prescription: Murder". Peter Falk as Lt. Columbo and Gene Barry as Dr. Ray Flemming. That's a moment frozen in Time and can only be considered as being a picture of Columbo and Flemming. I couldn't later claim that it's a bit o' wish-craft showing a crossover between lawyer Daniel J. O'Brien and Captain Amos Burke. ('Trials Of O'Brien' and 'Burke's Law' respectively.)
But the temptation is always there. Two days before I started writing this blog post, I had an idea about the love life of Barbara Gordon (AKA Batgirl) and the many TV characters with whom she may have had relationships.
Why? Because it amused me. Shut up! (Actually, I saw the picture after learning about the death of Efrem Zimbalist Jr. earlier this month.)
Yvonne Craig, who had many TV guest appearances before making her mark as the distaff damsel of derring-do in Gotham City, has plenty of those publicity shots and frame grabs from her career which could have illustrated such an article:
She could have carried on with both Stuart Bailey and Gerald Lloyd "Kookie" Kookson III at the same time.
('77 Sunset Strip')
Two-timing may have come easy to her. When she was a freshman in college, she could have had a fling with Dobie Gillis while at the same time putting the moves on his buddy Maynard G. Krebs.
('The Many Loves Of Dobie Gillis')
And maybe lawyer Sam Benedict was a sugar daddy. (Nothing says Barbara Gordon had to be all virgin sweetness.)
While moonlighting as a meter maid in Los Angeles, Barbara may have ticketed Steve Douglas which led to her dating his son Robbie.
('My Three Sons')
As for her liaison with Captain Lee Crane, that would have happened after her time seen on the screen as Batgirl since the adventures of the Seaview were set ten years into the future of original broadcast. (She still could have been carrying on that crime-fighting career however.)
('Voyage To The Bottom Of The Sea')
And it wouldn't all have to be about her love life. This frame grab from 'Perry Mason' with Neil Hamilton could have been of her home life with her Dad, Commissioner Gordon.....
But there is one picture I might consider to be eligible as fodder for fanfic:
This is from a Don Knotts movie "How To Frame A Figg". But as that takes place in the Cineverse, it's fair game to use it for Earth Prime-Time as a scene where Barbara Gordon would be in a Raleigh restaurant with Barney Fife and Professor Hubert St. John (from the "Aunt Bee And The Lecturer" episode of 'The Andy Griffith Show').
But as for the other pictures? No, we couldn't use them. Still.... I got to put the idea out there anyway.
I'm a baaaaad boy......