FBPs can have numbers in their names.

code/_helpers/mobs.dm

@@ -63,12 +63,12 @@ proc/random_facial_hair_style(gender, species = "Human")
 
 		return f_style
 
-proc/sanitize_name(name, species = "Human")
+proc/sanitize_name(name, species = "Human", robot = 0)
 	var/datum/species/current_species
 	if(species)
 		current_species = all_species[species]
 
-	return current_species ? current_species.sanitize_name(name) : sanitizeName(name)
+	return current_species ? current_species.sanitize_name(name, robot) : sanitizeName(name, MAX_NAME_LEN, robot)
 
 proc/random_name(gender, species = "Human")
 

code/_helpers/text.dm

@@ -85,7 +85,7 @@
 			// 0  .. 9
 			if(48 to 57)			//Numbers
 				if(!last_char_group)		continue	//suppress at start of string
-				if(!allow_numbers)			continue
+				if(!allow_numbers)			continue	// If allow_numbers is 0, then don't do this.
 				output += ascii2text(ascii_char)
 				number_of_alphanumeric++
 				last_char_group = 3

code/modules/client/preference_setup/general/01_basic.dm

@@ -32,7 +32,7 @@ datum/preferences/proc/set_biological_gender(var/gender)
 	pref.age                = sanitize_integer(pref.age, get_min_age(), get_max_age(), initial(pref.age))
 	pref.biological_gender  = sanitize_inlist(pref.biological_gender, get_genders(), pick(get_genders()))
 	pref.identifying_gender = (pref.identifying_gender in all_genders_define_list) ? pref.identifying_gender : pref.biological_gender
-	pref.real_name          = sanitize_name(pref.real_name, pref.species)
+	pref.real_name		= sanitize_name(pref.real_name, pref.species, is_FBP())
 	if(!pref.real_name)
 		pref.real_name      = random_name(pref.identifying_gender, pref.species)
 	pref.spawnpoint         = sanitize_inlist(pref.spawnpoint, spawntypes, initial(pref.spawnpoint))
@@ -76,7 +76,7 @@ datum/preferences/proc/set_biological_gender(var/gender)
 	if(href_list["rename"])
 		var/raw_name = input(user, "Choose your character's name:", "Character Name")  as text|null
 		if (!isnull(raw_name) && CanUseTopic(user))
-			var/new_name = sanitize_name(raw_name, pref.species)
+			var/new_name = sanitize_name(raw_name, pref.species, is_FBP())
 			if(new_name)
 				pref.real_name = new_name
 				return TOPIC_REFRESH

code/modules/client/preference_setup/general/03_body.dm

@@ -654,6 +654,11 @@ var/global/list/valid_bloodtypes = list("A+", "A-", "B+", "B-", "AB+", "AB-", "O
 	while(null in pref.rlimb_data)
 		pref.rlimb_data -= null
 
+	// Sanitize the name so that there aren't any numbers sticking around.
+	pref.real_name          = sanitize_name(pref.real_name, pref.species)
+	if(!pref.real_name)
+		pref.real_name      = random_name(pref.identifying_gender, pref.species)
+
 /datum/category_item/player_setup_item/general/body/proc/SetSpecies(mob/user)
 	if(!pref.species_preview || !(pref.species_preview in all_species))
 		pref.species_preview = "Human"

code/modules/mob/living/carbon/human/species/species.dm

@@ -194,8 +194,8 @@
 			inherent_verbs = list()
 		inherent_verbs |= /mob/living/carbon/human/proc/regurgitate
 
-/datum/species/proc/sanitize_name(var/name)
-	return sanitizeName(name)
+/datum/species/proc/sanitize_name(var/name, var/robot = 0)
+	return sanitizeName(name, MAX_NAME_LEN, robot)
 
 /datum/species/proc/equip_survival_gear(var/mob/living/carbon/human/H,var/extendedtank = 1)
 	var/boxtype = /obj/item/weapon/storage/box/survival //Default survival box

html/changelogs/Atermonera - FBPnumbernames.yml

@@ -0,0 +1,13 @@
+# Your name.  
+author: Atermonera
+
+# Optional: Remove this file after generating master changelog.  Useful for PR changelogs that won't get used again.
+delete-after: True
+
+# Any changes you've made.  See valid prefix list above.
+# INDENT WITH TWO SPACES.  NOT TABS.  SPACES.
+# SCREW THIS UP AND IT WON'T WORK.
+# Also, all entries are changed into a single [] after a master changelog generation. Just remove the brackets when you add new entries.
+# Please surround your changes in  double quotes ("), as certain characters otherwise screws up compiling. The quotes will not show up in the changelog.
+changes: 
+  - rscadd: "FBPs can now have numbers in their name. The first character cannot be a number."