i like flash comics a lot

The Allens have been described as either as starting the speed force (Barry) or being a manifestation of the speed force (Bart) , But Wally is described as the speed force’s favourite, right? He’s outrun the speed force in one run and depicted as the fastest.

How does it work? And can the speed force be also affected by reboots etc etc. ( need it for a evil idea)

so, wally as the speedforce's favorite is more of an implication than an actual fact. viewed within the canon that barry is the speedforce, wally's "twice in a billion" chance to have gotten his powers ends up becoming an absolute certainty because barry's own, private want for a companion more or less shaped the universe to follow his will and gift-wrap him a baby-cheeked all-adoring wally to run besides him. no other speedster has that connotation because no one else is barry's favorite. and outside of that semi-established canon, it's been confirmed that, even without barry acting as a conduit for the speedforce, wally would've become a speedster anyway.

the flash (2023) #29

like, the speedforce being sentient is a fairly recent thing, but everytime it's so much as hinted at, the narrative is blatantly cozying up to wally. here's my bouncing baby brat, wally, i ask you to take it into your home and teach it to love you like i do you <3 hi wally it's the speedforce again just popping in to let you know that i love you and will keep you forever don't worry your pretty little head about it <33 hi wally it's your uncle the speedforce i am your quite literal god and you're my metaphorical favorite acolyte / nephewson <333

and YES the speedforce can be affected by reboots. there's multiple depictions of the speedforce, but for the most part, it's a benevolent force which thrives on connection. it's heaven, it's power, it's a rocky marriage that's doing it's damnest to keep you trapped there. it's going to kill you one day. but it's not evil or purposefully malicious. personally, i think the best way to think about it is that it's a power source that's shaped by the needs, wants, and perceptions of its users, for better or for worse. in current canon, it's characterized as an all-powerful symbiotic manifestation of love. and also that bart = speedforce.