My top candidate right now is Dr. Beverly Crusher. 
She's a few steps, at most half a floor, beneath being Carol Brady or a Stepford Wife. I mean she has no depth, no hint of any ill-thoughts or darkness in her mind.
I don't think Beverly ever thought a bad thought in her life.
She needed to be shown consciously doing something bad, wrong, & no “apologies” for it, no going back. This could be done in flashback maybe too.
IE1: She sickened or incapacitated a top competitor med student for a few days so she could advance to(wards) the top of the med school in said student's absence.
IE2: Show her blackmailing a Starfleet Academy admin to guarantee Wesley premiere “preferential” placement & dorm residence.
Something like those sort of things. Not those exact things necessarily. But point is well made.
Dr. Bashir was more of a real person than Bevvy. Ditto for The Doctor(EMH) from V'GER {ironic huh?.}
In contrast Gul Dukat was Trek's deepest character. But then TPTB ruined him by making him:
1st- Dictator of Cardassia after his out-of-character marriage of Cardies to the Changeling Empire
2nd- Final demolition of Dukat's character when TPTB next made him a space age “wizard” with that Cost O'Mow-Gin/Pa'Wraiths stuff
 
Made Dukat Bajor's “antichrist” to Sisko's being Bajor's “messiah”. Huh
Dukat was a baddy in the process of becoming a goodie which made him complex & deep.Then they ruin him completely
Doc Crusher was always an empty suitcase. And now it seems she'll stay forever a quasi-Carol Brady/semi-Stepford Wife
Which ST characters are YOUR candidates for most unreal & not believable as ever being real people?
	
		
			
		
		
	
				
			She's a few steps, at most half a floor, beneath being Carol Brady or a Stepford Wife. I mean she has no depth, no hint of any ill-thoughts or darkness in her mind.
I don't think Beverly ever thought a bad thought in her life.
She needed to be shown consciously doing something bad, wrong, & no “apologies” for it, no going back. This could be done in flashback maybe too.
IE1: She sickened or incapacitated a top competitor med student for a few days so she could advance to(wards) the top of the med school in said student's absence.
IE2: Show her blackmailing a Starfleet Academy admin to guarantee Wesley premiere “preferential” placement & dorm residence.
Something like those sort of things. Not those exact things necessarily. But point is well made.
Dr. Bashir was more of a real person than Bevvy. Ditto for The Doctor(EMH) from V'GER {ironic huh?.}
In contrast Gul Dukat was Trek's deepest character. But then TPTB ruined him by making him:
1st- Dictator of Cardassia after his out-of-character marriage of Cardies to the Changeling Empire

2nd- Final demolition of Dukat's character when TPTB next made him a space age “wizard” with that Cost O'Mow-Gin/Pa'Wraiths stuff
 Made Dukat Bajor's “antichrist” to Sisko's being Bajor's “messiah”. Huh

Dukat was a baddy in the process of becoming a goodie which made him complex & deep.Then they ruin him completely

Doc Crusher was always an empty suitcase. And now it seems she'll stay forever a quasi-Carol Brady/semi-Stepford Wife

Which ST characters are YOUR candidates for most unreal & not believable as ever being real people?
				
 ) suffered from that directive, but tended to break out of that mold by season three/four.
). She never once said anything even remotely interesting, or articulate, or non-generic. Could have gave pretty much 100% of her lines to O'Brien, Kira, and/or another character and it would have made no difference at all. Any time dialogues are so generic like that as to be interchangeable, you know something is seriously wrong with that character.