This page contains information regarding Star Trek: Lower Decks, and thus may contain spoilers.
Commander Jack Ransom was a male Human Starfleet officer who served as the first officer of the USS Cerritos under Captain Carol Freeman in the 2380s. (LD: "Second Contact") His birthday was July 16th. (LD: "Moist Vessel")
Ransom had extensive experience leading away missions, especially missions that seemed like "a walk in the park" before taking a sudden turn towards disastrous. Ransom listed facing horned gorillas, sentient tar, and "spores that make you hook up with your best friend's sister."
In 2380, Ransom served as Captain Carol Freeman's first officer aboard the USS Cerritos. That year, he led ground-based elements of a second contact mission to the capital planet of the Galar system, before being bitten by a Galardonian insect and bringing a rage virus aboard the ship. (LD: "Second Contact")
Ransom led a gift giving-mission to Gelrak V shortly after they had been signed into the Federation, when an incident led to the team being attacked and imprisoned. While being pitted against Vindor in a match to the death, Ransom stabbed Ensign Beckett Mariner in the foot to prevent her from being able to fight so he could defend his team. Vindor conceded the match, freeing the team. (LD: "Temporal Edict")
According to Bradward Boimler's simulation of Jack, he had used Captain Freeman's fondness for sweets (specifically cookies) to manipulate her. It was likely in one such attempt he found she was allergic to chocolate. (LD: "Crisis Point")
"Oh, what happened? Where am I? And… did I eat flesh?"
"Uh, hardly any."
"HOW MUCH DID I EAT?!"
"In thousands of simulations that has literally never happened before. Let's try another one, on a ship with even MORE children!"
"I know, it's always weird revisiting planets from the TOS era."
"It's what I call the 2260s. Stands for 'those old scientists' – You know, Spock, Scotty, those guys. Seems like they were stumbling on crazy new aliens every week back then."
"From now on, I'll make sure to give you special attention."
"No! Be as hard on her as you always are!"
"Yeah, be hard on me!"
"I'm only hard on you when you make me hard! I mean I'm – I'm not hard right now! I mean I could – I could get hard, if I wanted to, but I'm not hard right now. I'm so sorry! You're both great!"
- - Jack Ransom, Freeman, and Beckett Mariner, on being harsh on Beckett Mariner (LD: "No Small Parts")
"Looks like we'll have to repel them the old-fashioned way. Setting my fists to stun and my kicks to kill."
"Deanna, can you introduce me to any of your Betazoid friends?"
"Jack, I sense you exaggerate your confidence in order to mask an ocean of insecurity."
"Oh, will they sense that too? I can make that work for me."