The Man Who Wouldn't Tell - S2-E20
Character mistake: When Ted escorts Diana away from the elevator, he stares at the camera.
The Man Who Wouldn't Tell - S2-E20
Continuity mistake: At the lab, when Alan tries to create the formula, the door behind is open. A shot later, it’s closed, and Wonder Woman knocks the door down.
Phantom of the Roller Coaster: Part 2 - S3-E24
Continuity mistake: When Diana finds the trap door to the basement, she is wearing high heel boots. When she sneaks in, she's wearing black flat shoes.
Phantom of the Roller Coaster: Part 1 - S3-E23
Other mistake: The amusement park is called Fun Universe, but the pendant on the wall is misspelled as 'Univers'.
The Man Who Could Not Die - S3-E22
Continuity mistake: Wonder Woman places a man looking out the window, but from the opposite angle, he has vanished.
The Man Who Could Not Die - S3-E22
Continuity mistake: During the meeting between Akers, Diana and Dale, the monkey disappears between shots. (00:13:50)
Phantom of the Roller Coaster: Part 1 - S3-E23
Continuity mistake: After Diana transforms into Wonder Woman, a motorcycle suddenly appears next to her.
The Man Who Could Not Die - S3-E22
Revealing mistake: Obvious fireproof gear and a mask when Bryce escapes from the fire.
The Man Who Could Not Die - S3-E22
Revealing mistake: When Bryce shows up at Dr. Akers' place and asks for the briefcase, he is replaced with an obvious stunt double, chubbier and with a funny big wig.
Phantom of the Roller Coaster: Part 1 - S3-E23
Visible crew/equipment: Set lights reflected on the Mercedes door.
The Man Who Could Not Die - S3-E22
Continuity mistake: When Diana spins around and transforms herself, the car on the left disappears.
Revealing mistake: When old Mary Jane Thrip kicks the bad guys' ass and runs away, her younger stunt's face is visible.
Continuity mistake: When Diana spins around, the computers are on. When she transforms herself into Wonder Woman, they're off.
Continuity mistake: When George rides his motorbike, his stunt is slim, as opposed to George's fat body complexion.
Revealing mistake: Visible ramp to allow Wonder Woman to jump over the van.
The Girl with a Gift for Disaster - S3-E19
Revealing mistake: When the gas truck crashes against the blue car, it already has a dent on the door. After the crash, the dent disappears and the door gets fixed.
Revealing mistake: When George hangs upside down on the building ledge, the safety cable holding him is visible.
The Girl with a Gift for Disaster - S3-E19
Visible crew/equipment: Set lights are reflected on the bearded spy's glasses while inside the undercover plumbing van.
The Richest Man in the World - S3-E17
Continuity mistake: Barney signals with his right hand where he lives, but a shot later he uses his left hand.
The Richest Man in the World - S3-E17
Continuity mistake: When Diana stops her car, a blue car parked in front is reflected on the door, but disappears in the opposite shots.
Answer: Yes, on the first episode of season 2, she is shown on the island, when another plane crash lands, she says, "They sound different from WW II". Later in the same episode a woman gathers background information on Wonder Woman. The woman says, "From 1942 to 1945, she helped the Allies win the war."