The baldric didn't just show that Worf was Klingon. It was also an important celebration of Klingon heritage. While other baldrics might have been used to carry weapons, the Klingon ones were solely for honoring their family or house, something that was important to Worf.
Worf's metal sash is a family emblem that many Klingons in TOS also had. It was where he held his family crest of the House Of Mogh and Martok gave him the crest of the House Of Martok Crest for the sash when he had Worf join his house. That is really all the sash is for.
Worf wears a special Klingon Baldric through most of his time on Star Trek series removing it only on a handful of special occasions for seemingly no reason. And during the time he served in Starfleet and during significant Klingon personal events he modified his Bladric or upgraded it altogether.
At first, he wore a golden sash, a replica of the baldrics worn by Kor and Kang in TOS. Then, when Worf switched from a command red uniform to a services gold one, they gave him a new, original silver sash. It was of a kind never seen on any Klingon before.
After season 1 of TNG wrapped production, Worf's facial prosthetics were either lost or stolen. This presented Michael Westmore, TNG's primary makeup designer, with an opportunity to improve the look of the character.
Although Worf was raised by humans, he considered himself a Klingon at heart and studied in-depth the ways of his people. As an adult, his mannerisms and personality, as well as his innate sense of honor, became more Klingon than human.
By putting Worf in a yellow field jacket, the Picard writers' room and costume department imply that, following the Enterprise disaster, he's reverted to the Starfleet division in which he was always more comfortable.
The baldric didn't just show that Worf was Klingon. It was also an important celebration of Klingon heritage. While other baldrics might have been used to carry weapons, the Klingon ones were solely for honoring their family or house, something that was important to Worf.
Worf's correct last name is Rozhenko. It's his adopted name. Klingons don't have last names. They are referred to as [name], Son of [father's name], or House of [family's House name].
Summary. Troi wore civilian clothes for most of TNG to put her patients at ease as the ship's counselor and indicate her position. Captain Picard allowed Troi to wear civilian clothes on the bridge due to her empathic abilities and his disregard for unnecessary regulations.
To defend his father's honor, Worf challenged the allegations of the House of Duras. However, when it became clear that the influential and powerful Duras could incite a Klingon civil war and kill his brother Kurn, Worf remained silent and was ceremonially stripped of his Klingon honor.
When he began aboard the Enterprise, Tasha Yar was the Security Chief and Worf was a helmsman. Helmsmen are in Command track and wear red; while Security, Operations and Engineering wore the odd gold uniforms.
Alexander Rozhenko is the son of Worf and K'Ehleyr, a woman he had somewhat of a relationship when he was younger. Alexander was basically dropped off by his mother, to Worf, while on the enterprise and Worf's adoptive Human (Russian) parents took Alexander in to raise him.
Worf is his first name. In Starfleet, he goes by Worf Roshenko (his adoptive parents last name). In the Klingon Empire, he uses Worf, son of Mogh. Basically, although little detail is ever given, Klingons don't have last names as we understand them.
In the Star Trek: Deep Space Nine episode "Sons of Mogh," Worf admitted to Lieutenant Commander Jadzia Dax (Terry Ferrell) that he often preferred using the mek'leth, as it was lightweight and easy to conceal. Worf savaged plenty of Jem'Hadar soldiers with the mek'leth during the Dominion War.
Worf was Married to Jadzia Dax and (spoiler) at her death in DS9 became a widower. He did have a fling with Deanna Troi through 2370, which was the result of Worf seeing himself Married to Counselor Troi in an alternate reality which led him to actually pursue Deanna romantically which was welcomed by her.
In Star Trek (IDW), Alexander, frustrated with Worf's seeming ignorance of him, joins Kahless II's god-killing cult and pitting him against his father and other Starfleet members. Ultimately, Worf is able to rescue his son, but is left with a bitter frustration.
Memory Alpha notes that there is no canonical maximum estimate for Klingon lifespans, but several Klingons are known to have exceed a century, and some may have made it past 150 (earyh) years. That makes them pretty comparable to 24th century humans.
Since Pierce was dead at the time of the action, there was no way that Worf and Troi could have interviewed him. And they were shown to have slept together after their interview with him. Also Geordi states that there were no bones found, so that was part of Deanna's vision too.
Picard was under severe emotional distress, but the crew was unwilling to call him out on it - except for Worf. When he expressed his concerns to Picard, he was called a coward - a huge insult in Klingon culture. Worf became visibly angry, and told Picard he would have killed him if he had been anyone else.
The appearance of Klingons in Star Trek has evolved over time, with the original series using minimal makeup due to their tight budget. Later series introduced cranial ridges, and Discovery created a more alien look for the Klingons.
') The creators do go some way to explain this is the show. Q appears at first as the young that man Picard and audiences know, thanks to some fancy de-aging CGI. He would then snap his fingers to appear much older to match his old friend Picard, turning himself into de Lancie as he looks today.
But as Beltran explained on Twitter, he declined to return. “I was offered an episode (first 2 then1) in Picard, but I simply did not like what they had written for Chakotay so I turned them down,” wrote Beltran.
In Star Trek VI: The Undiscovered Country (set around 70 years before the Next Generation era began), Colonel Worf (also portrayed by Dorn) appears as the legal advocate of Captain James T. Kirk and Dr. Leonard McCoy after they are accused of killing Chancellor Gorkon of the Klingon High Council.
