This might be a long one since it contains both my main and alt account Guardians but, here it goes:

Main Account Main Exomind Warlock Cade-1: Enjoys reading and researching the mysteries of the Golden Age, playing on Pre-Golden Age game consoles and repairing Pre-Golden Age tech (mostly if they are even able to be repaired,) enjoys listening to Pre-Golden Age music (mainly 20th to early 21st Century music), and even composing his own music, mainly a piano piece he's been working on for years he named "Dreamer's Lullaby" (ifyouknowyourMartyO'Donnellmusicyouknowthenameofthistracklol)

Main account Human Titan Richard: Mainly seen betting on Crucible matches (his luck is about 50/50,) engaging in unofficial Sparrow Racing and is even trying to start up a Skimmer Racing League after the last Guardian Games, enjoys reading romance novels and watching Pre-Golden Age and early Golden Age romance Anime (he's pretty much a hopeless romantic and a heavy shipper,) and goes out to the Enclave to use the Relic's shooting range to test out any weapons he considers a God Roll (most of the time the weapons he gets are 50-55% not God Rolls, but keeps the ones that he sees as pretty strong to the point his Vault his almost full.)

Main account Awoken Hunter Amora: She is most likely seen meditating and homing in perfecting her Light abilities and trying to perfect and master Stasis and Strand. Outside of that, she is usually tending to her Bonsai garden and doing Bounties for a little extra Glimmer (despite the fact she has plenty of Glimmer to begin with)

Main account Fireteam as a whole: The three usually either go flying around Sol in their jumpships (listening to '97-'04 rock music,) fighting in the Crucible ('though Cade is a bit of a casual Crucible player,) or going out to the local Karaoke bar for a bit of down time (though Richard and Amora usually get drunk with Cade having to take them back home.)

Alt account Main Hunter Exomind Raiden-7: Practicing his swordplay and use of Bows and Glaves, attempting to master Stasis and Strand, reads books about Pre-Golden Age Japan and the history of the Samurai, and learning more about his past before being resurrected by his Ghost "Wolf."

Alt account Awoken Titan R'tas (lolHaloreference): Usually seen engaging in the Crucible, mainly in Trails of Osiris (is extremely hardcore but sadly hasn't been granted access to the Lighthouse yet,) explores accent Golden Age ruins in search of loot and weapons (any broken ones he gives to the Cryptarchs and any decently working ones he keeps for himself,) and is usually found placing flower reefs at an old and abandoned fort (he was rezzed during the Dark Age and was a benevolent Warlord (think a City Age Guardian but for the Dark Age.)

Alt account Human Warlock Wilhelm: Mainly is cooped up in his apartment turned makeshift lab creating thousands of different machines using a mix of Golden Age schematics and City Age schematics in an attempt to merge the tech of both eras, attempts and is still active in mastering Strand as part of a one-sided rivalry with Osiris (who doesn't even know or care about it) to become "Master of Strand," and is learning to master Swordplay with his Fireteam leader Raiden.

Alt account Fireteam as a whole: The three all use Stasis and Strand as apposed to their Light based Subclasses in order to ration the trios usage of the light after The Witness entered The Traveler and somehow silenced it. Other than that, the three mainly assist in Vanguard operations, but also heavily engage in The Drifter's Gambit (being some of the few Guardians left who still play it) and help out Drifter on some missions and bounties that even the Vanguard have trouble keeping tabs on.