diff --git a/build-tools/build-indexes b/build-tools/build-indexes
index cef9a02ea2..b94450483a 100755
--- a/build-tools/build-indexes
+++ b/build-tools/build-indexes
@@ -322,7 +322,7 @@ process.stdout.write("Building `data/teambuilder-tables.js`... ");
 	const LC = GENS.map(num => num + 0.7);
 	const STADIUM = [2.04, 1.04];
 	const NATDEX = [9.1, 8.1];
-	const OTHER = [9.2, 8.6, 8.4, 8.2, 8.1, -8.4, -8.6, 7.1];
+	const OTHER = [9.9, 9.2, 8.6, 8.4, 8.2, 8.1, -8.4, -8.6, 7.1];
 
 	// process.stdout.write("\n  ");
 	for (const genIdent of [...GENS, ...DOUBLES, ...VGC, ...NFE, ...STADIUM, ...OTHER, ...NATDEX, ...LC]) {
@@ -336,6 +336,7 @@ process.stdout.write("Building `data/teambuilder-tables.js`... ");
 		const isStadium = ('' + genIdent).endsWith('.04');
 		const isDoubles = (genIdent < 0);
 		const isVGC = ('' + genIdent).endsWith('.5');
+		const isGen9BH = genIdent === 9.9;
 		const genNum = Math.floor(isDoubles ? -genIdent : genIdent);
 		const gen = (() => {
 			let genStr = 'gen' + genNum;
@@ -418,6 +419,20 @@ process.stdout.write("Building `data/teambuilder-tables.js`... ");
 					if (species.tier === 'LC') return 'LC';
 					return 'Regular';
 				}
+				if (isGen9BH) {
+					if ((species.natDexTier === 'Illegal' || species.forme.includes('Totem')) &&
+						!['Floette-Eternal', 'Greninja-Ash', 'Xerneas-Neutral'].includes(species.name)) {
+						return 'Illegal';
+					}
+					if ((species.name === 'Xerneas' || species.battleOnly || species.forme === 'Eternamax') &&
+						!(species.isMega || species.isPrimal || ['Greninja-Ash', 'Necrozma-Ultra'].includes(species.name))) {
+						return 'Illegal';
+					}
+					if (species.isNonstandard && ['LGPE', 'CAP', 'Future'].includes(species.isNonstandard)) return 'Illegal';
+					return species.tags.includes('Mythical') ? 'Mythical' :
+						species.tags.includes('Restricted Legendary') ? 'Restricted Legendary' :
+							species.nfe ? (species.prevo ? 'NFE' : 'LC') : 'Regular';
+				}
 				if (species.tier === 'CAP' || species.tier === 'CAP NFE' || species.tier === 'CAP LC') {
 					return species.tier;
 				}
@@ -511,6 +526,11 @@ process.stdout.write("Building `data/teambuilder-tables.js`... ");
 			BattleTeambuilderTable[gen + 'doubles'].tiers = tiers;
 			BattleTeambuilderTable[gen + 'doubles'].overrideTier = overrideTier;
 			BattleTeambuilderTable[gen + 'doubles'].formatSlices = formatSlices;
+		} else if (isGen9BH) {
+			BattleTeambuilderTable['bh'] = {};
+			BattleTeambuilderTable['bh'].tiers = tiers;
+			BattleTeambuilderTable['bh'].overrideTier = overrideTier;
+			BattleTeambuilderTable['bh'].formatSlices = formatSlices;
 		} else if (gen === 'gen9') {
 			BattleTeambuilderTable.tiers = tiers;
 			BattleTeambuilderTable.items = items;
@@ -535,7 +555,7 @@ process.stdout.write("Building `data/teambuilder-tables.js`... ");
 		}
 
 		const tierOrder = (() => {
-			if (isVGC) {
+			if (isVGC || isGen9BH) {
 				return ["Mythical", "Restricted Legendary", "Regular", "NFE", "LC"];
 			}
 			if (isDoubles && genNum > 4) {
diff --git a/src/battle-dex-search.ts b/src/battle-dex-search.ts
index 05a84869a2..367575c528 100644
--- a/src/battle-dex-search.ts
+++ b/src/battle-dex-search.ts
@@ -885,6 +885,7 @@ class BattlePokemonSearch extends BattleTypedSearch<'pokemon'> {
 		const format = this.format;
 		if (!format) return this.getDefaultResults();
 		const isVGCOrBS = format.startsWith('battlespot') || format.startsWith('battlestadium') || format.startsWith('vgc');
+		const isHackmons = format.includes('hackmons') || format.endsWith('bh');
 		let isDoublesOrBS = isVGCOrBS || this.formatType?.includes('doubles');
 		const dex = this.dex;
 
@@ -893,6 +894,8 @@ class BattlePokemonSearch extends BattleTypedSearch<'pokemon'> {
 			table = table['gen' + dex.gen];
 		} else if (isVGCOrBS) {
 			table = table['gen' + dex.gen + 'vgc'];
+		} else if (dex.gen === 9 && isHackmons && !this.formatType) {
+			table = table['bh'];
 		} else if (
 			table['gen' + dex.gen + 'doubles'] && dex.gen > 4 &&
 			this.formatType !== 'letsgo' && this.formatType !== 'bdspdoubles' && this.formatType !== 'dlc1doubles' &&
@@ -911,7 +914,7 @@ class BattlePokemonSearch extends BattleTypedSearch<'pokemon'> {
 		} else if (this.formatType === 'letsgo') {
 			table = table['gen7letsgo'];
 		} else if (this.formatType === 'natdex') {
-			table = table['gen' + this.dex.gen + 'natdex'];
+			table = table['gen' + dex.gen + 'natdex'];
 		} else if (this.formatType === 'metronome') {
 			table = table['gen' + dex.gen + 'metronome'];
 		} else if (this.formatType === 'nfe') {
@@ -938,8 +941,8 @@ class BattlePokemonSearch extends BattleTypedSearch<'pokemon'> {
 		let tierSet: SearchRow[] = table.tierSet;
 		let slices: {[k: string]: number} = table.formatSlices;
 		if (format === 'ubers' || format === 'uber') tierSet = tierSet.slice(slices.Uber);
-		else if (isVGCOrBS) {
-			if (format.endsWith('series13')) {
+		else if (isVGCOrBS || (isHackmons && dex.gen === 9 && !this.formatType)) {
+			if (format.endsWith('series13') || isHackmons) {
 				// Show Mythicals
 			} else if (
 				format === 'vgc2010' || format === 'vgc2016' || format.startsWith('vgc2019') ||
@@ -961,8 +964,9 @@ class BattlePokemonSearch extends BattleTypedSearch<'pokemon'> {
 			tierSet = tierSet.slice(slices['CAP LC'], slices.AG || slices.Uber).concat(tierSet.slice(slices.LC));
 		} else if (format === 'anythinggoes' || format.endsWith('ag') || format.startsWith('ag')) {
 			tierSet = tierSet.slice(slices.AG);
-		} else if (format.includes('hackmons') || format.endsWith('bh')) tierSet = tierSet.slice(slices.AG || slices.Uber);
-		else if (format === 'monotype') tierSet = tierSet.slice(slices.Uber);
+		} else if (isHackmons && (dex.gen < 9 || this.formatType === 'natdex')) {
+			tierSet = tierSet.slice(slices.AG || slices.Uber);
+		} else if (format === 'monotype') tierSet = tierSet.slice(slices.Uber);
 		else if (format === 'doublesubers') tierSet = tierSet.slice(slices.DUber);
 		else if (format === 'doublesou' && dex.gen > 4) tierSet = tierSet.slice(slices.DOU);
 		else if (format === 'doublesuu') tierSet = tierSet.slice(slices.DUU);